WO2001064583A1 - Produit forme en zeolite, intermediaire pour stratifie en zeolite, composite a stratifie en zeolite et procede pour leur elaboration - Google Patents
Produit forme en zeolite, intermediaire pour stratifie en zeolite, composite a stratifie en zeolite et procede pour leur elaboration Download PDFInfo
- Publication number
- WO2001064583A1 WO2001064583A1 PCT/JP2001/001562 JP0101562W WO0164583A1 WO 2001064583 A1 WO2001064583 A1 WO 2001064583A1 JP 0101562 W JP0101562 W JP 0101562W WO 0164583 A1 WO0164583 A1 WO 0164583A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- zeolite
- molded body
- agent
- laminated
- tpa
- Prior art date
Links
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims abstract description 701
- 239000010457 zeolite Substances 0.000 title claims abstract description 691
- 229910021536 Zeolite Inorganic materials 0.000 title claims abstract description 690
- 238000002360 preparation method Methods 0.000 title claims abstract description 80
- 239000002131 composite material Substances 0.000 title claims description 76
- 238000000034 method Methods 0.000 title description 72
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 107
- OSBSFAARYOCBHB-UHFFFAOYSA-N tetrapropylammonium Chemical compound CCC[N+](CCC)(CCC)CCC OSBSFAARYOCBHB-UHFFFAOYSA-N 0.000 claims abstract description 54
- 238000002425 crystallisation Methods 0.000 claims abstract description 30
- 230000008025 crystallization Effects 0.000 claims abstract description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000001307 helium Substances 0.000 claims abstract description 5
- 229910052734 helium Inorganic materials 0.000 claims abstract description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052681 coesite Inorganic materials 0.000 claims abstract 3
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract 3
- 229910052682 stishovite Inorganic materials 0.000 claims abstract 3
- 229910052905 tridymite Inorganic materials 0.000 claims abstract 3
- 239000012528 membrane Substances 0.000 claims description 106
- 239000003795 chemical substances by application Substances 0.000 claims description 104
- BGQMOFGZRJUORO-UHFFFAOYSA-M tetrapropylammonium bromide Chemical compound [Br-].CCC[N+](CCC)(CCC)CCC BGQMOFGZRJUORO-UHFFFAOYSA-M 0.000 claims description 87
- 239000002245 particle Substances 0.000 claims description 82
- 239000000203 mixture Substances 0.000 claims description 66
- 238000004519 manufacturing process Methods 0.000 claims description 51
- LPSKDVINWQNWFE-UHFFFAOYSA-M tetrapropylazanium;hydroxide Chemical compound [OH-].CCC[N+](CCC)(CCC)CCC LPSKDVINWQNWFE-UHFFFAOYSA-M 0.000 claims description 51
- 238000002156 mixing Methods 0.000 claims description 46
- 239000007788 liquid Substances 0.000 claims description 42
- 238000000465 moulding Methods 0.000 claims description 42
- -1 tetrapropylammonium ion Chemical class 0.000 claims description 40
- 239000000047 product Substances 0.000 claims description 30
- 238000001035 drying Methods 0.000 claims description 29
- 239000002002 slurry Substances 0.000 claims description 27
- 239000006082 mold release agent Substances 0.000 claims description 23
- 238000005452 bending Methods 0.000 claims description 22
- 239000007789 gas Substances 0.000 claims description 22
- 239000007921 spray Substances 0.000 claims description 21
- 238000001354 calcination Methods 0.000 claims description 19
- FLVKFIUSROZKPN-UHFFFAOYSA-N azane;tetrapropylazanium Chemical compound N.CCC[N+](CCC)(CCC)CCC FLVKFIUSROZKPN-UHFFFAOYSA-N 0.000 claims description 17
- 238000004898 kneading Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 13
- 239000008187 granular material Substances 0.000 claims description 9
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 239000012466 permeate Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 abstract description 6
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 127
- 239000000499 gel Substances 0.000 description 122
- 239000000243 solution Substances 0.000 description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 80
- 239000004809 Teflon Substances 0.000 description 51
- 229920006362 Teflon® Polymers 0.000 description 51
- 239000012153 distilled water Substances 0.000 description 40
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 36
- 239000000758 substrate Substances 0.000 description 31
- 230000000052 comparative effect Effects 0.000 description 29
- 238000003756 stirring Methods 0.000 description 26
- 238000006243 chemical reaction Methods 0.000 description 25
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 24
- 239000000126 substance Substances 0.000 description 24
- 238000002441 X-ray diffraction Methods 0.000 description 21
- 238000005373 pervaporation Methods 0.000 description 19
- 238000010438 heat treatment Methods 0.000 description 18
- 229910001220 stainless steel Inorganic materials 0.000 description 18
- 239000010935 stainless steel Substances 0.000 description 18
- 238000009694 cold isostatic pressing Methods 0.000 description 17
- 239000013078 crystal Substances 0.000 description 14
- 239000002808 molecular sieve Substances 0.000 description 14
- 238000013001 point bending Methods 0.000 description 14
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 14
- 239000003513 alkali Substances 0.000 description 13
- 238000000926 separation method Methods 0.000 description 13
- 239000000843 powder Substances 0.000 description 12
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 11
- 239000002994 raw material Substances 0.000 description 11
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 11
- 238000005507 spraying Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- LGXAANYJEHLUEM-UHFFFAOYSA-N 1,2,3-tri(propan-2-yl)benzene Chemical compound CC(C)C1=CC=CC(C(C)C)=C1C(C)C LGXAANYJEHLUEM-UHFFFAOYSA-N 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 8
- 229920006395 saturated elastomer Polymers 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 6
- 238000013329 compounding Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- 239000004570 mortar (masonry) Substances 0.000 description 6
- 238000010298 pulverizing process Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- VIDOPANCAUPXNH-UHFFFAOYSA-N 1,2,3-triethylbenzene Chemical compound CCC1=CC=CC(CC)=C1CC VIDOPANCAUPXNH-UHFFFAOYSA-N 0.000 description 5
- 239000002585 base Substances 0.000 description 5
- 238000001027 hydrothermal synthesis Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- 230000037396 body weight Effects 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 3
- CLVJBRYGLQNRDA-UHFFFAOYSA-N diphenylarsorylbenzene Chemical compound C=1C=CC=CC=1[As](C=1C=CC=CC=1)(=O)C1=CC=CC=C1 CLVJBRYGLQNRDA-UHFFFAOYSA-N 0.000 description 3
- 125000001475 halogen functional group Chemical group 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 229910052863 mullite Inorganic materials 0.000 description 3
- 238000001694 spray drying Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 241000238876 Acari Species 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000010191 image analysis Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- WGYKZJWCGVVSQN-UHFFFAOYSA-O propan-1-aminium Chemical compound CCC[NH3+] WGYKZJWCGVVSQN-UHFFFAOYSA-O 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical compound [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 description 2
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical compound CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000001238 wet grinding Methods 0.000 description 2
- YJLUBHOZZTYQIP-UHFFFAOYSA-N 2-[5-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NN=C(O1)CC(=O)N1CC2=C(CC1)NN=N2 YJLUBHOZZTYQIP-UHFFFAOYSA-N 0.000 description 1
- 206010000117 Abnormal behaviour Diseases 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 241000287828 Gallus gallus Species 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 241000282376 Panthera tigris Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- GVCMYAIAQAZGCU-UHFFFAOYSA-N azanium;prop-1-ene;hydroxide Chemical compound [NH4+].[OH-].CC=C.CC=C.CC=C.CC=C GVCMYAIAQAZGCU-UHFFFAOYSA-N 0.000 description 1
- 238000000861 blow drying Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 150000003842 bromide salts Chemical class 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- TWYVVGMYFLAQMU-UHFFFAOYSA-N gelgreen Chemical compound [I-].[I-].C1=C(N(C)C)C=C2[N+](CCCCCC(=O)NCCCOCCOCCOCCCNC(=O)CCCCC[N+]3=C4C=C(C=CC4=CC4=CC=C(C=C43)N(C)C)N(C)C)=C(C=C(C=C3)N(C)C)C3=CC2=C1 TWYVVGMYFLAQMU-UHFFFAOYSA-N 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- HAXIRVPXTHARCC-UHFFFAOYSA-N hydrogen peroxide tetrapropylazanium Chemical compound OO.CCC[N+](CCC)(CCC)CCC HAXIRVPXTHARCC-UHFFFAOYSA-N 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000010443 kyanite Substances 0.000 description 1
- 229910052850 kyanite Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- RJCRUVXAWQRZKQ-UHFFFAOYSA-N oxosilicon;silicon Chemical compound [Si].[Si]=O RJCRUVXAWQRZKQ-UHFFFAOYSA-N 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910021426 porous silicon Inorganic materials 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- DGMKFQYCZXERLX-UHFFFAOYSA-N proglumide Chemical compound CCCN(CCC)C(=O)C(CCC(O)=O)NC(=O)C1=CC=CC=C1 DGMKFQYCZXERLX-UHFFFAOYSA-N 0.000 description 1
- 229960003857 proglumide Drugs 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 229940043267 rhodamine b Drugs 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003826 uniaxial pressing Methods 0.000 description 1
- 239000012690 zeolite precursor Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
- C01B39/04—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof using at least one organic template directing agent, e.g. an ionic quaternary ammonium compound or an aminated compound
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/028—Molecular sieves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/028—Molecular sieves
- B01D71/0281—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/03—Catalysts comprising molecular sieves not having base-exchange properties
- B01J29/035—Microporous crystalline materials not having base exchange properties, such as silica polymorphs, e.g. silicalites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
-
- B01J35/59—
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B37/00—Compounds having molecular sieve properties but not having base-exchange properties
- C01B37/02—Crystalline silica-polymorphs, e.g. silicalites dealuminated aluminosilicate zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/12—Specific ratios of components used
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S423/00—Chemistry of inorganic compounds
- Y10S423/22—MFI, e.g. ZSM-5. silicalite, LZ-241
Definitions
- the present invention relates to a zeolite molded article, a zeolite laminated intermediate, a zeolite laminated composite, and a method for producing them.
- the present invention relates to a zeolite molded article, a zeolite laminated intermediate, a zeolite laminated composite, and a method for producing them. More specifically, a zeolite membrane can be formed and maintained on it without generating cracks, and when used as a gas separation membrane such as a molecular sieve membrane or a pervaporation membrane, pressure loss is reduced and mechanical strength is reduced.
- a gas separation membrane such as a molecular sieve membrane or a pervaporation membrane
- a zeolite compact that satisfies all of the requirements for maintenance, a zeolite laminate intermediate in which a zeolite film containing a molding agent is laminated on this zeolite compact, and a calcined intermediate formed of this zeolite laminate
- the present invention relates to a laminated zeolite composite and a method for efficiently producing the same.
- zeolite compacts composed of zeolite particles have been widely used as catalysts, catalyst carriers, adsorbents and the like.
- a zeolite laminated composite formed by laminating a zeolite membrane on a porous ceramics ⁇ metal or the like is used for a molecular sieve membrane (gas separation membrane, pervaporation membrane).
- zeolite laminated composites using various porous substrates and methods for producing the same have been proposed.
- a monolithic support having an oxide composition composed of magnesia has been proposed (Japanese Patent Application Laid-Open No. 11-48771). Specifically, a sintered monolithic support of kyanite, glass, or glass ceramic has been proposed. Have been.
- the present invention relates to a method for producing an A-type or faujasite-type zeolite film, and proposes a method using a substrate made of a substance containing silicon oxide silicon as a main component (Japanese Patent Laid-Open Publication No. Hei 6-332610). Publication).
- This method is intended to solve the problem of poor adhesion of the zeolite film to the substrate, and uses a zeolite film raw material as the substrate itself, and the substrate surface becomes a zeolite film due to its configuration. Therefore, synthesis and attachment can proceed simultaneously, and the process can be simplified.
- substrates made of borosilicate glass, quartz glass, silica alumina, mullite, and the like have been proposed.
- the present invention also relates to a method for producing a supported zeolite membrane and the obtained membrane, wherein the carrier is selected from the group consisting of a ceramic substance based on alumina, zirconia or titanium oxide, metal, carbon, silica, zeolite, clay and polymer.
- a material comprising a selected inorganic, organic or mixed substance has been proposed (Japanese Patent Application Laid-Open No. Hei 91-37979).
- a porous zeolite body in which a porous ceramic substrate subjected to a zeolite treatment is provided with a large number of internal pores of a predetermined size and having a compressive breaking strength of 5 MPa or more has been proposed (Japanese Patent Application Laid-open No. No. 292,651).
- the thermal expansion coefficient of zeolite is a very small value up to about 200 ° C, but then shows a negative coefficient at high temperatures, indicating a very complicated behavior. do. For this reason, when the zeolite membrane is used at a temperature exceeding 200 ° C., the difference in thermal expansion from a substrate, for example, an alumina substrate, becomes extremely large, Cracks are generated in the zeolite film due to thermal stress.
- a type III agent or a crystallization promoter during synthesis.
- the zeolite film containing the type III agent is calcined at about 500 ° C to remove the type III agent, but as shown in the thermal expansion curve of the MF I type zeolite in Fig. 17,
- the thermal expansion behavior of the zeolite membrane (the thermal expansion curve before calcining in Fig. 17) is extremely different from the thermal expansion behavior of the zeolite membrane without the type III agent (the thermal expansion curve after calcining in Fig. 17). Due to the difference, for example, the difference in thermal expansion from a substrate such as an alumina-based substrate becomes extremely large, and cracks occur in the zeolite film due to thermal stress during calcination.
- the substrate and the zeolite membrane have a two-layer structure, a macroporous layer of a predetermined thickness substantially formed of only a molecular sieve crystal, and a substantially predetermined thickness and a predetermined effective pore diameter of a pore.
- Asymmetric membrane consisting of a molecular sieve crystal of the same kind as the material of the macroporous layer and an upper layer for molecular separation (Japanese Unexamined Patent Publication No. 7-505533), a carrier, A structure comprising three layers, an intermediate layer and an upper layer, wherein the intermediate layer and the upper layer contain a predetermined crystalline molecular sieve (Japanese Patent Application Laid-Open No.
- zeolite composite film International Publication No. WO 00/23 in which a zeolite film containing a type III agent is coated on a tozelite molded body and then calcined to simultaneously remove the type III agent from the film and the substrate. 3 7 8) has been proposed.
- These membranes and structures are excellent in that the size of the pores can be accurately adjusted and cracks can be effectively prevented.
- the zeolite zeolite molded body obtained with the zeolite composite membrane (International Publication No. WO 0/23378), which simultaneously removes the type III agent from the above-mentioned substrate, is the source of the formation.
- the raw material dry gel
- TPAOH tetrapropylammonium hydroxide
- the resulting dry gel has a non-uniform particle size and a dry state. Because of the tendency to cause inhomogeneity and the like in the microstructure after the crystallization treatment, the zeolite particles tend to have coarse and dense portions and shattered portions, which was not always satisfactory.
- a method of previously dispersing a type-forming agent such as tetrapropylammonium (TPA) in a dried gel and converting it into zeolite by steam treatment is a conventional method for producing a dried gel. It was thought that it was necessary to agitate the mixed solution of the gel and mold agent until they dried, so the mixed solution of gel and mold agent was heated to about 80 ° C to remove water. A process in which stirring (kneading) is continued until sufficient drying is achieved after evaporation has been generally adopted (N. J appar, Q. Xia, and T. Tat urni, J. Catal). 1 80, 1 3 2—141 (1 998), R.
- TPA tetrapropylammonium
- the present invention has been made in view of the above-mentioned problems, and can form and maintain a zeolite membrane thereon without generating cracks, and can be used as a gas separation membrane such as a molecular sieve membrane.
- a zeolite molded body that satisfies both the reduction of pressure loss and the maintenance and improvement of mechanical strength, a zeolite laminated intermediate in which a zeolite membrane containing a mold agent is laminated on this zeolite molded body, It is an object of the present invention to provide a laminated zeolite composite formed by calcining a laminated intermediate and an efficient production method thereof. Disclosure of the invention
- the present invention provides the following zeolite molded article, zeolite laminated intermediate, zeolite laminated composite, and a method for producing them.
- blending ratio of the tetrapropylammonium ammonium Niu-ion (TPA) and the silica sol (TP A / S i 0 2 ) is in a molar ratio 02-0. Is 12, and the feature that it consists Zeorai Bok crystallization developing Zeolite compact.
- the zeolite molded article according to the above [1] or [2] contains a mold release agent, and a zeolite film containing a mold release agent having the same or similar composition is laminated thereon.
- a zeolite laminated intermediate characterized in that:
- zeolite film having the same or a similar composition is laminated on a zeolite molded body containing zigzag zeolite and containing a mold release agent, and then calcined to form the zeolite film and the zeolite.
- a method for producing a zeolite laminated composite comprising simultaneously removing a molding agent from a molded body to obtain a zeolite laminated composite in which the zeolite film is laminated on the zeolite molded body.
- TP A 0.5 tetrapropyl ammonium Niu-ion (TP A) compounding proportion of the silica sol (TPA / S i 0 2) is in a molar ratio 02-0. Is 12, and together consist Zeoraito crystallization developing A zeolite film having the same or a similar composition is laminated on the zeolite molded body containing the molding agent, and then calcined to simultaneously remove the molding agent from the zeolite film and the zeolite molded body; A method for producing a zeolite laminated composite, comprising obtaining a zeolite laminated composite in which the zeolite film is laminated on the zeolite molded body.
- the permeation amount of the helium gas is 1 Om 1 / cm 2 ⁇ min A zeolite molded body, wherein a difference between a supply side pressure and a permeation side pressure is 1.0 atm or less.
- the zeolite molded article according to the above [7] contains a mold release agent, and a zeolite film containing a mold release agent having the same or similar composition is laminated thereon. Zeolite laminated intermediate.
- the zeolite laminate intermediate according to [8] is formed by calcining the zeolite laminate and removing the zeolite film from the zeolite film containing the zeolite compact and the zeolite agent.
- TPAOH Tetrapropylammonium hydroxide
- TPABr tetrapropylammonium bromide
- TPAOH tetrapropylammonium hydroxide
- TPABr tetrapropylammonium bromide
- a solution of tetrapropylammonium hydroxide (TPAOH) is added to a silica sol, and the resulting preparation is sprayed and dried, and the resulting dried gel is shaped and crystallized.
- TPAOH tetrapropylammonium hydroxide
- a method for producing a zeolite laminate intermediate comprising forming a laminate of a molded body and a zeolite film containing the molding agent.
- TPAOH Tetrapropylammonium-hydroxyhydroxide
- TPA ⁇ H tetrapropylammonium hydroxide
- TPABr tetrapropylammonium bromide
- the resulting preparation was kneaded and dried, and the resulting dried gel was formed and crystallized to obtain a zeolite molded body, and the obtained zeolite was obtained.
- the molded body is immersed in a solution having the same or similar composition as the preparation liquid, and hydrothermally synthesized to form a zeolite membrane containing an agent on the zeolite molded body.
- a method for producing a zeolite laminated composite comprising forming a laminate with a zeolite film containing a mold agent, and calcining the laminate to simultaneously remove the mold agent.
- Tetrapropylammonium hydroxide (TPAOH) solution is added to the silica sol, the resulting preparation is sprayed and dried, and the resulting dried gel is formed and crystallized to form zeolite.
- the zeolite film obtained is immersed in a solution having the same or similar composition as the preparation liquid, and hydrothermally synthesized to obtain a zeolite membrane containing a mold agent on the zeolite formed body Forming a laminate of the zeolite molded body and the zeolite film containing the mold agent, and calcining the laminate to simultaneously remove the mold agent. Manufacturing method for laminated composites.
- the zeolite molded article according to the above [16] contains a mold release agent, and a zeolite film containing a mold release agent having the same or similar composition is laminated thereon.
- the zeolite laminate intermediate according to [17] is calcined to remove the zeolite molded body and the zeolite film from the zeolite film containing the zeolite agent, thereby forming the zeolite laminate.
- a zeolite film is laminated on the zeolite molded body. And a laminated zeolite composite.
- TPAOH tetrapropylammonium hydroxide
- TPAOH Tetrapropylammonium hydroxide
- the product is molded and crystallized to obtain a zeolite molded product, and the obtained zeolite molded product is immersed in a solution having the same or similar composition as the preparation liquid, and hydrothermally synthesized to form the zeolite molded product.
- the resulting preparation was sprayed and dried, and the resulting dried gel was molded and crystallized to obtain a zeolite molded article.
- the zeolite molded article is immersed in a solution having a composition similar to or similar to that of the preparation liquid, and hydrothermally synthesized to form a zeolite film containing a mold agent on the zeolite molded article.
- Molded body and mold agent A method for producing a zeolite laminate intermediate, comprising forming a laminate with a zeolite membrane containing:
- a silica sol, 0.1 tetrapropyl ammonium Niu Muhi Dorokishido the (TPAO H) solution the mixing ratio of said silica sol with tetrapropyl ammonium Niu-ion (TPA) (TPAZS i 0 2 ) is in a molar ratio of 015 to 0. 08, kneading and drying the resulting preparation, wet-grinding the resulting dry gel, spraying and drying the resulting slurry, and obtaining the resulting dried gel granulate.
- zeolite molded body Is molded and crystallized to obtain a zeolite molded body, and the obtained zeolite molded body is immersed in a solution having the same or similar composition as the preparation liquid, and hydrothermally synthesized to form the zeolite molded body.
- a zeolite film containing a mold agent is formed on the body to form a laminate of the zeolite molded body and the zeolite film containing the mold agent, and the laminate is calcined. ⁇ characterized by simultaneously removing the mold release agent Method for producing a light layered composite.
- a tetrapropylammonium hydroxide (TPAOH) solution is added to the silica sol, and the compounding ratio (TPAZS i ⁇ 2 ) of tetrapropylammonium ion (TPA) and the silica sol is 0.015 in molar ratio.
- the resulting preparation was sprayed and dried, and the resulting dried gel was molded and crystallized to obtain a zeolite molded article.
- the zeolite molded body is immersed in a solution having the same or similar composition as the preparation liquid, and hydrothermally synthesized to form a zeolite film containing a mold agent on the zeolite molded body.
- a method for producing a zeolite laminate composite comprising forming a laminate of a molded article and a zeolite film containing the mold agent, and calcining the laminate to simultaneously remove the mold agent.
- FIG. 1 is an SEM photograph showing a microstructure of a fractured surface of a zeolite laminated intermediate obtained in Example 12 of the first invention.
- FIG. 2 is a graph showing an X-ray diffraction result showing that the film is an MFI zeolite membrane.
- FIG. 3 shows the total amount of tetrapropylammonium ion (TPA) of tetrapropylammonium bromide (TPABr) in the zeolite molded articles obtained in Examples 14 to 19 of the second invention and Comparative Example 16.
- Ie (TPAOH + TPA 6 is a graph showing the relationship between the blending ratio [TP AB r / (TP AOH + TP AB r)] with respect to B r) and the average particle size.
- FIG. 4 to FIG. 8 are SE ⁇ photographs showing the microstructure of the fractured surface of the zeolite molded body obtained in Examples 14 to 18 of the second invention.
- FIG. 1 tetrapropylammonium ion
- TPABr tetrapropylammonium bromide
- FIG. 9 shows the relationship between the total amount of tetrapropylammonium ion (TPA) of tetrapropylammonium bromide (TPABr) in the zeolite compacts obtained in Examples 14 to 19 of the second invention and Comparative Example 16. It is a graph which shows the relationship between compounding ratio (TPAB rZTP A) and bending strength.
- FIG. 10 is a graph showing the relationship between the average particle diameter and the four-point bending strength of the zeolite compacts obtained in Examples 14 to 19 of the second invention and Comparative Example 16.
- FIG. 11 is a graph showing the relationship between the average particle size and the pressure loss in the zeolite molded bodies obtained in Examples 14 to 20 and Comparative Example 16 of the second invention.
- FIGS. 12 to 14 are SEM photographs showing microstructures of fractured surfaces of the zeolite molded bodies obtained in Examples 19 to 20 and Comparative Example 16 of the second invention.
- FIG. 15 is an explanatory diagram showing a crack measuring method by
- FIG. 16 is a graph showing a thermal expansion curve of MF type I zeolite.
- FIG. 17 is a graph showing the thermal expansion curves of MF type I zeolite (before and after calcination) and alumina.
- FIG. 18 is an SEM photograph showing a method for measuring an average particle diameter.
- FIG. 19 is a replica view of an SEM photograph showing a method of measuring an average particle diameter.
- FIG. 20 is an explanatory diagram showing a method for measuring the average particle diameter.
- FIG. 21 is an explanatory diagram showing a method for measuring pressure loss.
- FIG. 22 is an SEM photograph showing a microstructure of a fractured surface of the zeolite laminated intermediate obtained in Example 21 of the second invention.
- FIG. 23 is a graph showing the particle size distribution of the slurry obtained in Example 23 of the third invention.
- FIG. 24 is a SEM photograph showing the microstructure of the outer surface of the dried gel granulated powder obtained in Example 23 of the third invention.
- FIGS. 25 to 26 are SEM photographs showing the microstructure of the fractured surface of the zeolite molded body obtained in Example 23 of the third invention.
- FIG. 27 is an SEM photograph showing the microstructure of the outer surface of the dried gel obtained in Example 24 of the third invention.
- FIG. 28 to FIG. 29 are SEM photographs showing the microstructure of the fractured surface of the zeolite compact obtained in Example 24 of the third invention.
- FIG. 30 is a SEM photograph showing the microstructure of the outer surface of the dried gel obtained in Comparative Example 17 of the third invention. It is.
- FIG. 31 and FIG. 32 are SEM photographs showing the microstructure of the fractured surface of the zeolite molded body obtained in Comparative Example 17 of the third invention.
- FIG. 33 is an SEM photograph showing a method for measuring the homogeneity of a fracture surface of a zeolite compact.
- FIG. 34 is a repli- cation diagram of an SEM photograph showing a method of measuring the homogeneity of a fracture surface of a zeolite molded body.
- FIG. 35 is an SEM photograph showing the microstructure of the fractured surface of the zeolite laminated intermediate obtained in Example 25 of the third invention.
- the zeolite molded article of the present invention is effectively used for a gas separation membrane such as a molecular sieve membrane, a pervaporation membrane or the like as a zeolite laminated composite formed by laminating a zeolite membrane thereon as a substrate. It is necessary that the zeolite film laminated and formed thereon can be prevented from cracking. Therefore, when the zeolite molded article of the present invention is used to obtain a zeolite laminated composite by laminating a zeolite membrane thereon, it has the same or similar composition as the zeolite membrane laminated thereon. It is preferable that the porous zeolite is composed of particles composed of the following zeolite.
- the thermal expansion behavior of the zeolite film containing the mold release agent as shown in FIG.
- a substrate whose thermal expansion coefficient is similar to that of the zeolite film for example, quartz glass, etc.
- the zeolite molded article of the present invention has the same composition as all of the components including the mold agent. In terms of surface, it is preferably a porous zeolite having the same or similar composition as the zeolite membrane.
- the zeolite molded article of the present invention is a porous zeolite molded article composed of zeolite, wherein the mixing ratio of tetrapropylammonium ion (TPA) and silica sol (TP AZ Si i 2 ) is 0 in molar ratio. 0.15 to 0.08 and is a porous zeolite formed of zeolite or zeolite, which is made of tetrapropylammonium ion (TPA) and silica sol. 0 at the mixing ratio (TPA / S i 0 2) molar ratio of. 0 2 0. 1 2, and characterized by comprising the Zeoraito crystallization developing (hereinafter, the present invention, "first Invention ").
- first Invention Zeoraito crystallization developing
- the strength of the zeolite molded article of the first invention can be increased to 1.5 MPa or more, so that a zeolite film is formed thereon without being destroyed even in a hydrothermal environment.
- the function of the film can be maintained without destroying the zeolite film even after the zeolite film is formed.
- perfect crystallized zeolite means that in X-ray diffraction, all sharp peaks indicating zeolite in the region of 20 to 30 ° (CuK a) are clearly observed.
- Having no halo means "zeolite in the course of crystallization” and means that a peak of zeolite is slightly observed in the same X-ray diffraction.
- the zeolite laminate intermediate of the first invention is a zeolite membrane in which the above-mentioned zeolite compact contains a mold release agent, and further contains a mold release agent having the same or similar composition. Are laminated.
- the zeolite laminate composite of the first invention is formed by calcining the above-described zeolite laminate intermediate to remove the zeolite molded product and the zeolite film from the zeolite film containing the zeolite agent. It is characterized in that a zeolite film is laminated on the formed zeolite compact.
- the zeolite used in the first invention is not particularly limited, and examples thereof include MFI, AFI, DDR, and the like, which exhibit abnormal behavior in which thermal expansion is nonlinear.
- zeolite laminate composite comprising a zeolite membrane using these zeolites and a zeolite molded body as a substrate. Since it is usually difficult to prevent the generation of cracks in the zeolite film when this is configured, it can be effectively used in the first invention.
- tetrapropylammonium hydroxide tetrapropylammonium hydroxide (TPAOH)
- bromide tetrapropylammonium bromide (TPABr)
- BEA tetrapropylammonium hydroxide
- TPAOH tetrapropylammonium hydroxide
- TPABr bromide
- BEA tetrapropylammonium bromide
- TSA tetraethylammonium
- a zeolite film was laminated and formed thereon using a zeolite such as MF I, AFI, DDR, etc., which contained a mold agent.
- a zeolite laminated composite it shall be composed of zeolite having the same or similar composition including the same zeolite membrane as the zeolite membrane, including MF I, AF I, DDR, etc.
- a zeolite film not containing a type III agent is laminated thereon and used for a formed zeolite laminated composite, the same or similar composition is also included, including the absence of the type III agent. It is preferable to be composed of zeolite.
- a method of manufacturing Zeorai preparative layered composite of the first invention the mixing ratio of tetrapropyl-en Moniumuion and (TPA) and the silica sol (TPAZS i 0 2) is located at 0.01 5 to 0.08 in a molar ratio and fully crystallized Zeorai bets, or proportion (TPA / S i 0 2) is from 0.02 to 0.12 in molar ratio, and with consists consists Zeorai preparative crystallization developing, ⁇ A zeolite film having the same or a similar composition is laminated on the zeolite molded product containing the agent, and then calcined to remove the type III agent from the zeolite film and the zeolite molded product at the same time.
- a zeolite laminated composite in which a zeolite film is laminated is obtained.
- a conventionally known method can be adopted, and for example, a hydrothermal synthesis method, a gas phase transport method, or the like can be used. Further, as a method for producing a zeolite molded body, the following method is known, and any of them can be used. That is,
- the binder After solidifying the zeolite powder with a binder, the binder is zeolite How to convert to
- kaolin is added to zeolite, mixed, calcined, and then subjected to an alkali hydrothermal treatment to transfer kaolin to zeolite (see JP-A-10-101326), There is a method of converting metakaolin into zeolite by mixing zeolite and metakaoline and treating with alkali (see Japanese Patent Application Laid-Open No. 52-103391).
- a silicate is mixed with kanemite to obtain an amorphous silicate powder, which is heated after molding.
- a method for obtaining a zeolite such as MFI see Japanese Patent No. 2725720
- a method in which a mixture of TEOS and a template is hydrolyzed and then dried to obtain an amorphous silicate powder, which is then molded and heat-treated or a method for obtaining zeolite (see Shimizu, S., iyozumiY. & MizukamiRChem. Lett., 1996, 403-404).
- the zeolite molded article of the present invention is a porous zeolite molded article made of zeolite, having an average particle diameter of at least 1. ⁇ , a bending strength of at least 1.5 MPa, and a thickness of at least 1. .
- the difference between the supply-side pressure and the permeate side pressure in Heriumugasu permeation amount 10 m 1 Z cm 2 ⁇ min is characterized in that 1. at most 0 atm (hereinafter, This invention is sometimes referred to as "second invention.”
- the zeolite compact of the second invention has an average particle size of at least 1.0 ⁇ m, preferably at least 2.5 / m, and a bending strength of at least 1.5 MPa, preferably at least 6.0 MPa.
- the permeation amount of the helium gas is 10 m 1 / cm 2
- the difference (pressure loss) between the supply side pressure and the permeation side pressure at min is 1.0 atm or less, preferably 0.6 atm or less.
- the zeolite molded article of the second invention can form and maintain a zeolite membrane thereon without generating cracks, and can also perform gas separation membranes such as molecular sieve membranes and pervaporation. When it is used as a membrane, it also satisfies the pressure loss reduction and the maintenance and improvement of mechanical strength.
- the average particle diameter was determined by measuring the maximum length of each particle using an image analyzer and averaging the measured lengths. That is, the fractured surface (portion randomly extracted) of the zeolite molded article of the second invention was observed with a scanning electron microscope (SEM), and an SEM photograph was taken (FIG. 18). Based on this SEM photograph, a replica diagram was created with black and white colors (Fig. 19). In this case, the white part indicates the particles, and the black part indicates the gaps between particles and the particles are unclear.However, select the particles that allow the entire zeolite particles to be seen. Particles with visible diameter were selected. In addition, the measurement was not performed for particles that are not clear as a whole due to overlapping of particles.
- the image analysis was performed using an image analyzer (trade name: Toyobo Co., Ltd., product name: Image Analyzer-1 V10), and the replica image was imported to a personal computer to perform the measurement area, scale, and binarization processing. (Recognition and recognition of the white part in the replica diagram as a zeolite particle and the black part as a non-measurement part such as voids between particles) based on the criteria shown in Fig. 20 (a) to (c). The maximum length of each particle was measured, and the average particle diameter was calculated.
- the bending strength was measured in accordance with JIS 1601.
- the zeolite molded article (diameter 18 mm, thickness 1.8 mm) 11 of the second invention and a quartz glass tube 12 are joined with an epoxy resin and placed in a metal (stainless steel) container 13.
- a Heriumugasu as feed gas 1 4
- up to 8 kgf / cm 2 pressurized to a pressure meter 1 6 the pressure of the feed gas 1 4, the pressure of the permeate gas 1 5 by the pressure gauge 1 7, also The permeation amount was measured by a flow meter 18.
- the difference between the supply-side pressure and the permeate side pressure in the permeability of 1 O m 1 Z cm 2 ' min helicopter Umugasu was pressure loss.
- the pressure loss of the porous material increases in proportion to the thickness of the measurement sample (the pressure loss also doubles as the thickness increases twice). It is necessary to make the thickness of the material always the same or to make corrections by calculation taking into account the thickness.
- the thickness of the sample was adjusted to 1.8 mm, and the pressure difference between the supply side and the permeation side in that shape was measured and defined as the pressure loss.
- the method for producing a zeolite molded article according to the second invention is characterized in that a tetrapropylammonium hydroxide (TPAOH) solution and tetrapropylammonium bromide (TPABr) are added to a silica sol by mixing these tetrapropylammonium ions (TPA) with the silica sol. So that the mixing ratio (TPAZS i 0 2 ) with the above becomes a predetermined molar ratio, and that tetrapropylammonium hydroxide (TPAOH) and tetrapropylammonium bromide with respect to the total amount of tetrapropylammonium ion (TPA) are used.
- TPAOH tetrapropylammonium hydroxide
- TPABr tetrapropylammonium bromide
- TPABr the proportions [TPAOH, (TPAOH + TPABr), and TPABr / (TPAOH + TPABr)] are adjusted to be 0-99 mol% and 100-1 mol%. And the resulting preparation is kneaded and dried, and the resulting dried gel is shaped and crystallized.
- the diameter does not change, and the bending strength is 1.5 MPa or more, which is necessary for a substrate capable of forming a zeolite laminate composite (it does not break down under the hydrothermal synthesis environment of the zeolite film and forms a film. It can be adjusted in any range from the viewpoint of having a strength that does not break even after being performed).
- the bending strength was adjusted to TP AZS i 0 2 molar ratio 0.04 to be the maximum.
- TP AZS i 0 2 molar ratio of preparation and the total amount TP TP for A AO H, if each of the mixing ratio of TPAB r is if kept at a predetermined amount, in order to adjust the p H optionally,
- An alkali source such as sodium hydroxide or potassium hydroxide may be added.
- the dry gel is formed into a predetermined shape by uniaxial press molding (total pressure 1000 kgf), and then cold isostatic pressing is performed to obtain a dry gel molded body.
- the pressure of the cold forming is preferably adjusted in the range of 700 to 7000 kg ⁇ / cm 2 so as to obtain a desired dry gel formed body density.
- the dried gel molded body obtained as described above was placed on a Teflon plate in a stainless steel pressure-resistant container with a Teflon inner cylinder filled with distilled water of the same weight as the molded body so as not to come in contact with water. , And reacted under autogenous steam pressure in an oven at 180 ° C for 10 hours to crystallize to obtain a zeolite molded body.
- the amount of distilled water at this time is the minimum amount that reaches the saturated steam pressure in the volume of the pressure vessel used, and if it is more than that, there is no restriction from the relationship between the molded body and the distilled water.
- the reaction temperature and time are not particularly limited as long as the crystallization proceeds at 130 ° C. or more and 2 hours or more.
- the method for producing a zeolite molded article according to the second invention is characterized in that a tetrapropyl pyrammonium hydroxide (TPAOH) solution is added to a silica sol, and a blending ratio of these tetrapropylammonium ions (TPA) and silica sol (TPAZS i 0 2 ) is added so as to have a predetermined molar ratio, and the obtained preparation is sprayed and dried, and the obtained dried gel is characterized by being formed and crystallized. Good.
- TPAOH tetrapropyl pyrammonium hydroxide
- TPAZS i 0 2 silica sol
- a spray dryer was used for drying the preparation in the second invention.
- the prepared liquid is transported to the tip of the spray nozzle by a liquid feed pump, where it is sprayed with pressurized air and then dried and collected in a drying chamber through which dry air flows.
- the air circulated in the drying chamber is preheated to 180 ° C near the spray port of the preparation liquid and the pressurized air, but this temperature varies depending on the volume of the drying chamber. Therefore, there is no particular limitation.
- the blending ratio of the tetrapropylammonium ammonium Niu-ion (TPA) and the silica sol (TPA / S i 0 2 molar ratio), average particle diameter of Zeoraito molded body in a range of molar ratio 0.01 5 to 0.08 Does not change, and the bending strength is zeolite laminated Since it has 1.5 MPa or more, which is necessary for a substrate capable of forming a complex, it may be adjusted in any range. In the embodiment of the second invention, the bending strength was adjusted to TPA / S i 0 2 molar ratio of 0. 0 4 becomes maximum.
- an alkali source such as sodium hydroxide or potassium hydroxide may be added to adjust the pH as necessary. Ray.
- the prepared liquid is sprayed by the above-described spraying method and dried to obtain a dried gel.
- the dried gel is formed into a predetermined shape by uniaxial press molding (total pressure of 1000 kgf), and then cold isostatic pressing is performed to obtain a dried gel molded body.
- the pressure of the cold isostatic pressing is preferably adjusted in the range of 700 to 700 kgf / cm 2 so as to obtain a desired dry gel molded body density.
- the dried gel molded body obtained as described above was placed in a stainless steel pressure-resistant container with a Teflon inner cylinder filled with distilled water of the same weight as the molded body so as not to come in contact with water. And subjected to crystallization in an oven at 180 ° C for 10 hours under autogenous steam pressure to obtain a zeolite compact.
- the amount of distilled water at this time is the minimum amount that reaches the saturated steam pressure in the volume of the pressure vessel used, and if it is more than that, there is no restriction from the relationship between the molded body and the distilled water. Also, regarding the reaction temperature and time,
- crystallization proceeds at 130 ° C. or more and for 2 hours or more, there is no particular limitation as long as the temperature and time are higher.
- the method of spraying and drying can make the drying more uniform and effectively prevent the microstructure after the crystallization treatment from the densification and shedding than the above-mentioned method of kneading and drying.
- the zeolite laminate intermediate of the second invention is the above-mentioned zeolite molded body containing a mold release agent, and a zeolite film containing a mold release agent having the same or similar composition is laminated thereon. It is characterized by the following.
- the same method as in the first invention can be used.
- the zeolite laminate composite of the second invention is calcined to remove the mold agent from the zeolite formed body and the zeolite film containing the mold agent.
- a zeolite film is laminated on a zeolite molded body formed by performing the method.
- the zeolite laminated composite is effectively used for a gas separation membrane such as a molecular sieve membrane, a pervaporation membrane, and the like. Therefore, a zeolite membrane containing a mold agent laminated on a zeolite molded body is used.
- the zeolite membrane from which the mold agent has been removed must have a sufficient thickness so that the zeolite molded body is not exposed, and must be a dense membrane.
- the zeolite film containing the mold release agent to be laminated is made of zeolite having the same or similar composition including the same mold release agent. It must be composed (the same applies to the first invention and the third invention described later).
- a tetrapropylammonium hydroxide (TPAOH) solution and tetrapropylammonium hydroxide (TPABr) are added to a silica sol.
- ion blending ratio of the (T PA) and silica sol has a predetermined molar ratio, and tetrapropylammonium ammonium Niu arm hydroxide to the total amount of tetrapropylammonium ammonium Niu-ion (TPA) ( TPAOH) and tetrapropylammonium bromide (TPABr) [TPAOHZ (TPAOH + TPABr) and TPABr / (TPAOH + TPABr)] 0-99 mol% and 100- 1 mole.
- a zeolite laminated composite according to the second invention is immersed in a solution having the same or similar composition as the preparation liquid, and hydrothermally synthesized to form a zeolite film containing a mold agent on the zeolite molded body. And forming a laminate with a zeolite film containing. Specifically, the method for producing a zeolite laminated composite according to the second invention will be described.
- the silica sol as tetrapropyl ammonium Niu Muhi Dorokishido the (TPAOH) solution, mixing ratio of these tetrapropyl ammonium Niu-ion (TPA) and the silica sol (TPAZS i 0 2) has a predetermined molar ratio ⁇ Ka
- the resulting preparation liquid was dried by atomization, and the resulting dried gel was formed and crystallized to form zeolite.
- a molded body is obtained, and the obtained zeolite molded body is immersed in a solution having the same or similar composition as the preparation liquid, and hydrothermally synthesized to form a zeolite membrane containing a type III agent on the zeolite molded body. And forming a laminate of a zeolite molded body and a zeolite membrane containing a molding agent.
- the method for producing a zeolite laminated composite according to the second invention will be described.
- the method for producing a zeolite laminate composite according to the second invention is characterized in that a tetrapropylammonium hydroxide (TPAOH) solution and tetrapropylammonium amide (TPABr) are added to a silica sol, and these tetrapropylammonium ions (TPA) as the mixing ratio of the silica sol (TP A_ S i O 2) has a predetermined molar ratio, and Te tiger propyl ammonium to the total amount of tetrapropylammonium ammonium Niu-ion (TPA) - Umuhi Dorokishido (TPAOH) and tetrapropylammonium Amo-Pembromide (TPABr) compounding ratio [TPAOH / (TPAOH + TPABr) and TPABrZ (TPAOH + TPABr)] 0 ⁇ 99mol 0 / o and 100 ⁇ 1mol .
- the resulting preparation is kneaded and dried.
- the resulting dried gel is molded and crystallized to obtain a zeolite molded body.
- the zeolite molded article is immersed in a solution having the same or similar composition as the preparation liquid, and hydrothermally synthesized to form a zeolite film containing a molding agent on the zeolite molded article.
- a laminate with a zeolite film containing a mold agent is formed, and the laminate is calcined to simultaneously remove the mold agent.
- TPA tetrapropylammonium ammonium Niu Mui O emissions
- S i 0 2 molar ratio silica sol
- the average particle size of the zeolite compact does not change within the range of, and the bending strength is adjusted to any range since it has 1.5 MPa or more, which is necessary as a substrate capable of forming a zeolite laminate composite. May be.
- the bending strength was adjusted to TP A / S i 0 2 molar ratio 0.04 to be the maximum.
- An alkali source such as sodium hydroxide and potassium hydroxide may be added.
- the stirring and kneading at this time may be carried out by heating edder or the like.
- the dry gel is molded by uniaxial press molding (total pressure of 1 000 kgf) to form a predetermined shape, and then cold isostatic pressing is performed to obtain a dry gel molded body.
- the pressure for the cold isostatic pressing is preferably adjusted in the range of 700 to 7000 kgi / cm 2 so as to obtain a desired dry gel molded article density.
- the dried gel molded body obtained as described above was placed on a Teflon plate in a stainless steel pressure-resistant container with a Teflon inner cylinder filled with distilled water of the same weight as the molded body so as not to come in contact with water. And allowed to react under autogenous steam pressure in an oven at 180 ° C for 10 hours for crystallization to obtain a zeolite molded body.
- the amount of distilled water at this time is the minimum amount that reaches the saturated steam pressure in the volume of the pressure vessel used, and if it is more than that, there is no restriction from the relationship between the molded body and the distilled water.
- the reaction temperature and time are not particularly limited as long as the crystallization proceeds at 130 ° C. or more and 2 hours or more.
- a reaction is carried out for 18 hours in an oven at 180 ° C., and a zeolite membrane having a thickness of 20 ⁇ or more and comprising a dense layer is formed on the zeolite molded body. Formed.
- the molar ratio of Si 2 / tetrapropylammonium ion (TPA) / water in the prepared solution is maintained at a predetermined amount
- sodium hydroxide and hydroxide may be used to adjust the pH as necessary.
- An alkali source such as a power rim may be added.
- the method for forming the zeolite film the same method as in the first invention can be used.
- the method for producing a zeolite laminated composite of the second invention is characterized in that a tetrapropylammonium hydroxide (TPAOH) solution is added to a silica sol, and a mixing ratio of these tetrapyruammonium ion (TPA) to the silica sol ( TPAZS io 2 ) is adjusted to a predetermined molar ratio, and the mixture is added, and the resulting preparation is sprayed and dried. The resulting dried gel is formed and crystallized to form zeolite.
- TPAOH tetrapropylammonium hydroxide
- the zeolite formed body is obtained, and the obtained zeolite formed body is immersed in a solution having the same or similar composition as the preparation liquid, and hydrothermally synthesized to form a zeolite film containing a type III agent on the zeolite formed body Then, a laminate of the zeolite molded body and the zeolite film containing the mold agent is formed, and the laminate is calcined to remove the mold agent at the same time. You may.
- the compounding ratio of the tetrapropylammonium ammonium Niu-ion (TPA) and the silica sol (TPAZS i 0 2 molar ratio) in the range of molar ratio 0.01 5 to 0.08 Zeorai The average particle size of the molded article does not change, and the flexural strength has 1.5 MPa or more, which is necessary for a substrate capable of forming a zeolite laminated composite, so that it may be adjusted in any range. Les ,.
- the bending strength was adjusted to TP AZS I_ ⁇ 2 molar ratio 0.04 to be the maximum.
- a spray dryer was used for drying the prepared liquid.
- the preparation liquid is sprayed by pressurized air and then dried in a drying chamber through which dry air flows.
- the air circulated in the drying chamber is preheated to 180 ° C near the spray port, but this temperature is not limited because it varies depending on the volume of the drying chamber. .
- the dry gel is formed into a predetermined shape by uniaxial press molding (total pressure 1000 kgf), and then cold isostatic pressing is performed to obtain a dry gel molded body.
- the pressure of the cold isostatic pressing is preferably adjusted in the range of 7 00 ⁇ 7000 kgf / cm 2 to a desired dry gel green density.
- the dried gel molded body obtained as described above is placed in a Teflon-coated stainless steel pressure-resistant container filled with distilled water of the same weight as the molded body so as to avoid contact with water. It is placed on a lip plate and reacted under autogenous steam pressure in an oven at 180 ° C for 10 hours for crystallization to obtain a zeolite compact.
- the amount of distilled water at this time is the minimum amount that reaches the saturated steam pressure in the volume of the pressure vessel used, and if it is more than that, there is no restriction from the relationship between the molded body and the distilled water. Also, regarding the reaction temperature and time,
- crystallization proceeds at 130 ° C. or more and for 2 hours or more, there is no particular limitation as long as the temperature and time are higher.
- a zeolite laminated composite is obtained.
- the reaction was carried out in an oven at 180 ° C. for 18 hours, and a thick layer of 20 / zm or more was formed on the zeolite molded body from a strong, dense layer.
- a zeolite membrane was formed.
- the same method as in the first invention can be used.
- the zeolite molded article of the present invention is a porous zeolite molded article composed of particles made of zeolite, and in the microstructure observation of the fracture surface of the molded article, among the particles constituting the zeolite molded article, It is characterized in that the area of a part (sound part) where individual particles are clearly observed by grain boundary fracture occupies 70% or more of the total fracture area (hereinafter, this invention is referred to as “third aspect”). Invention ").
- the zigzag agent used in the first and second inventions should be the same.
- the zeolite molded body of the third invention is a part (solid part) in which individual particles are clearly observed due to grain boundary fracture of particles constituting the zeolite molded body. ) Occupies 70% or more of the total fracture area.
- the microstructure of the fractured surface can be reduced. As a result, uniformity is obtained with less degranulation and coarse and dense portions, and both the reduction of pressure loss and the maintenance and improvement of mechanical strength are satisfied.
- the degree of homogeneity (homogeneity) in the microstructure of the fractured surface is determined by observing the microstructure of the fractured surface of the zeolite compact using a scanning electron microscope (SEM). The ratio was determined by calculating the ratio of the area of the healthy part to the total fracture area using an analyzer.
- SEM scanning electron microscope
- the white part is a sound part (a part where individual particles are clearly observed due to grain boundary fracture), and the black part is a dense part (individual particles are not clearly observed due to intragranular fracture) Part).
- the image analysis was performed using an image analyzer (Toyobo Co., Ltd., product name: Image Analyzer VI0), and the image of the replica figure was imported to a personal computer, and the measurement area, scale, and binarization processing (replica figure) were performed.
- the process of recognizing a white part as a healthy part and a black part as a non-measured part of a dense part) was set, and the ratio of the area of the healthy part to the total fracture area was calculated.
- the bending strength was measured in accordance with JIS 1601.
- the area of the sound part in the microstructure of the fractured surface occupies 70% or more of the total fracture area, and 90% or more of the total fracture area is more preferable.
- the bending strength is preferably 1.5 MPa or more, and 6.OMPa or more is more preferable, and when the wall thickness is 1.8 mm, the helium gas permeation amount is 10 m 1 / cm 2.
- the difference (pressure loss) between the supply side pressure and the permeation side pressure in min is preferably 1.0 atmosphere or less, more preferably 0.6 atmosphere or less.
- the silica sol tetrapropylammonium Anmoniumuhi Dorokishido (TPAOH) solution, mixing ratio of tetrapropyl ammonium Niu-ion and (TPA) and the silica sol (TPA / S i 0 2) Is added in a molar ratio of 0.015 to 0.08, preferably 0.02 to 0.06, and the obtained preparation is kneaded and dried, and the obtained dry It is characterized in that the gel is wet-pulverized, the obtained slurry is sprayed and dried, and the obtained dried gel granule is formed and crystallized.
- TPAOH tetrapropylammonium Anmoniumuhi Dorokishido
- a spray dryer of a solution slurry such as a spray dryer, a fluidized granulation dryer and the like
- a spray dryer was used for drying the slurry in the embodiment of the third invention.
- the slurry is transported to the tip of the spray nozzle by a liquid feed pump, where it is sprayed with pressurized air and then dried and collected in a drying chamber through which dry air flows.
- the air flowing into the drying chamber is preheated to 180 ° C near the spray port of the slurry and pressurized air, but this temperature also changes depending on the volume of the drying chamber. Is not particularly limited.
- Spray drying of a slurry using a spray dryer is known as a method of granulating ceramic fine powder suitable for pressure molding, and it is granulated by instantaneous heating and drying. I won't be affected. Accordingly, even raw material and silica sol and tetrapropyl ammonium Niu-ion (TPA) is blended, regardless by the TPA material if the composition proportion of the above (TPAZS I_ ⁇ 2 molar ratio) is given, the spray After drying and crystallization treatment, a zeolite molded body can be obtained.
- TPA silica sol and tetrapropyl ammonium Niu-ion
- a silica sol and a solution of tetrapropylammonium hydroxide (TPAOH) are mixed.
- TPAOH tetrapropylammonium hydroxide
- TPAZS i 0 2 molar ratio tetrapropyl ammonium ion
- molar ratio 0.01 5-0 tetrapropyl ammonium ion
- TP tetrapropyl ammonium ion
- TPAZS i 0 2 molar ratio silica sol
- molar ratio 0.01 5-0 molar ratio 0.01 5-0.
- the strength 1.5MPa or more (strength that does not break down in the hydrothermal synthesis environment of zeolite membrane and does not break down after forming the membrane) required as a substrate capable of forming a zeolite laminated composite is maintained.
- the raw material of the tetrapropylammonium ion (TPA) to be added may be a tetrapropylammonium hydroxide (TPAOH) solution, tetrapropylammonium bromide (TPABr), or a mixture thereof. It may be a mixture of two raw materials. Also, TPA / S i 0 2 molar ratio of the preparation is long is kept in a predetermined amount, in order to adjust the pH if necessary, hydroxide Natoriumu may be added an alkali source such as potassium hydroxide .
- using a 0.04 flexural strength is maximum as TPA / S i 0 2 molar ratio, as tetrapropyl ammonium Niu-ion (TPA) source, tetrapropylammonium ammonium Niu arm hydroxy (TPAOH) solution.
- a slurry of the dried gel the dried gel obtained by stirring and kneading, distilled water and a cobblestone for grinding were placed in a Teflon container, and wet milled with a pole mill.
- a slurry may be prepared by a method other than ball mill wet pulverization, for example, by pulverizing the dried gel using a medium stirring pulverizer (attritor) and then adding predetermined distilled water.
- the slurry is sprayed by the spraying method as described above and dried to obtain a dried gel granule.
- the dried gel granules are formed by uniaxial press molding (total pressure of 1000 kgf) to prepare a predetermined shape, and then cold isostatic pressing to obtain a dried gel molded body. You. At this time, the pressure of the cold isostatic pressing is preferably adjusted in the range of 700 to 7000 kgf / cm 2 so as to obtain a desired density of the dried gel compact.
- the dried gel molded body obtained as described above was placed in a stainless steel pressure-resistant container with a Teflon inner cylinder filled with distilled water of the same weight as the molded body so that the Teflon plate was not contacted with water. It is placed on the top and reacted for 10 hours under autogenous steam pressure in an oven at 180 ° C and crystallized to obtain a zeolite compact.
- the amount of distilled water at this time is the minimum amount that reaches the saturated steam pressure in the volume of the pressure vessel used, and if it is more than that, there is no restriction from the relationship between the molded body and the distilled water.
- the reaction temperature and time are not particularly limited as long as the crystallization proceeds at 130 ° C. or more and 2 hours or more.
- the method for producing a zeolite molded article according to the third invention is characterized in that the tetrabutylammonium hydroxide (TPAOH) solution is added to the silica sol, and the mixing ratio (TPA / Si) of the tetrapropylammonium ion (TPA) and the silica sol. ( 2 ) is added so that the molar ratio becomes 0.015 to 0.08, and the obtained preparation is sprayed and dried, and the obtained dried gel is molded and crystallized. It may be.
- TPAOH tetrabutylammonium hydroxide
- a silica sol and a tetrapropyl ammonium hydroxide (T PAOH) solution are mixed.
- T PAOH tetrapropyl ammonium hydroxide
- molar ratio 0.01 5 to 0.08, preferably 0.02 to 0 In the range of 06, the average particle size of the zeolite compact does not change, and it maintains the bending strength of 1.5 MPa or more, which is necessary as a substrate capable of forming a laminated zeolite composite.
- the ratio may be adjusted in any of the above ranges.
- the raw material of tetrapropylammonium ion (TPA) to be added may be a tetrapropylammonium hydroxide (TPAOH) solution or tetrapropylammonium bromide (TPABr), or a mixture of these two raw materials. It may be something. Further, TP A / S i 0 2 molar ratio of the above prepared solution if kept at a predetermined amount, in order to adjust the pH if necessary, hydroxyl Ihinatoriumu, an alkali source such as potassium hydroxide is added You may.
- TPAOH tetrapropylammonium hydroxide
- TPABr tetrapropylammonium bromide
- TP AZ S i 0 flexural strength as 2 molar ratio is maximized 0 0 4 using, as tetrapropyl ammonium Niu-ion (TPA) source, tetrapropyl ammonium -. Umuhi It was prepared using droxide (TPAOH) solution.
- the prepared solution is sprayed by the spraying method as described above and dried to obtain a dried gel.
- the dried gel is formed into a predetermined shape by uniaxial press molding (total pressure of 1000 kgf), and then cold isostatic pressing is performed to obtain a dried gel molded body.
- the pressure of the cold isostatic molding Shi preferred to adjust the desired dry 7 0 0-7 such that the gel compact density 0 0 0 kgf range of Z cm 2 les.
- the dried gel molded body obtained as described above was placed on a Teflon plate in a stainless steel pressure-resistant container with a Teflon inner cylinder filled with distilled water of the same weight as the molded body so as not to come in contact with water. And allowed to react under autogenous steam pressure in an oven at 180 ° C for 10 hours for crystallization treatment to obtain a zeolite molded body.
- the amount of distilled water at this time is the minimum amount that reaches the saturated steam pressure in the volume of the pressure vessel used, and if it is more than that, there is no restriction from the relationship between the molded body and the distilled water.
- the reaction temperature and time are not particularly limited as long as the crystallization proceeds at 130 ° C. or more and for 2 hours or more, so long as the temperature and time are longer than that.
- the method of spraying and drying can make the drying more uniform and can effectively prevent the microstructure after the crystallization treatment from the densification and shedding than the conventional method of kneading and drying.
- the zeolite laminate intermediate of the third invention is characterized in that a zeolite membrane containing a mold agent having the same or similar composition is laminated on the above-mentioned zeolite molded body.
- the method for forming the zeolite film containing the type III agent is not particularly limited, and examples thereof include a hydrothermal synthesis method and a gas phase transport method.
- the zeolite laminated composite of the third invention is formed by calcining the above-described zeolite laminated intermediate to remove the zeolite molded product and the zeolite film from the zeolite film containing the zeolite agent, The zeolite film is not laminated on the zeolite compact. It is characterized by that.
- the zeolite containing a type III agent laminated on a zeolite molded body is used.
- the zeolite film from which the zeolite molding agent has been removed needs to have a sufficient thickness so that the zeolite molded body is not exposed, and must be a dense film.
- the zeolite film containing the type III type zeolite having the same or similar composition, including the same type II type molding agent is used. It must be composed of
- the obtained dried gel granules are molded and crystallized to obtain a zeolite molded body, and the obtained zeolite molded body is immersed in a solution having the same or similar composition as the preparation liquid, and subjected to hydrothermal synthesis.
- a zeolite membrane containing a zeolite agent is formed on the zeolite molded body, and a laminate of the zeolite formed body and the zeolite membrane containing the zeolite agent is formed.
- the method for producing the zeolite laminated composite of the third invention will be described.
- silica sol tetrapropyl ammonium Niu beam hydroxide to (TP AOH) solution, the formulation of tetrapropyl ammonium Niu-ion and (TPA) and the silica sol percentage (TP AZS i 0 2) is 0.01 5 molar ratio 0.08, and the resulting preparation was sprayed and dried.
- the resulting dried gel was molded and crystallized to obtain a zeolite molded body. It is immersed in a solution of the same or similar composition as the preparation solution, and hydrothermally synthesized to form a zeolite film containing a zeolite on the zeolite molded body. It may be characterized by forming a laminate with the contained zeolite membrane.
- a tetrapropylene ammonium hydroxide ( ⁇ ) solution is mixed in a silica sol, and a compounding ratio (TPAZS i 0 2 ) of tetrapropylammonium ion ( ⁇ ) and silica sol is determined. It is added so that the molar ratio becomes 0.015 to 0.08, the obtained preparation liquid is kneaded and dried, the obtained dry gel is wet-pulverized, and the obtained slurry is sprayed, dried and obtained.
- TPAZS i 0 2 compounding ratio
- the obtained dried gel granulation is molded and crystallized to obtain a zeolite molded body, and the obtained zeolite molded body is immersed in a solution having the same or similar composition as the preparation liquid, and hydrothermally synthesized. Then, a zeolite film containing a molding agent is formed on the zeolite molded body to form a laminate of the zeolite molded body and the zeolite film containing the molding agent, and this laminate is temporarily formed. Baking to remove mold agent at the same time It is characterized by that.
- a silica sol and a tetrapropylammonium hydroxide (T PAOH) solution are mixed.
- T PAOH tetrapropylammonium hydroxide
- molar ratio 0.01 5 to 0.08, preferably from 0.02 to 0.06 within this range, the average particle size of the zeolite molded body does not change, and the bending strength required as a substrate capable of forming a zeolite laminated composite is maintained at 1.5 MPa or more.
- the ratio may be adjusted in any range.
- the raw material of tetrapropylammonium ion (TPA) to be added may be a tetrapropylammonium hydroxide (TPAOH) solution or tetrapropylammonium bromide (TPABr), or a mixture of these two raw materials. It may be something. Further, TP A / S i 0 2 molar ratio of preparation is long is kept in a predetermined amount, in order to adjust the pH if necessary, sodium hydroxide may be added an alkali source such as potassium hydroxide .
- using a 0.04 flexural strength is maximum as TPA / S i 0 2 molar ratio, as tetrapropyl ammonium Niu-ion (TPA) source, tetrapropylammonium ammonium Niu Muhi Dorokishido (TPAOH) solution.
- a slurry of the dried gel the dried gel obtained by stirring and kneading, distilled water and a cobblestone for pulverization were placed in a Teflon container and ball mill wet pulverization was performed.
- a slurry may be prepared by finely pulverizing the dried gel using a medium agitating pulverizer (a liter) and then adding predetermined distilled water.
- the slurry is sprayed by the spraying method as described above and dried to obtain a dried gel granule.
- the dried gel granulated product is formed into a predetermined shape by uniaxial press molding (total pressure of 1000 kgf) and then subjected to cold isostatic pressing to obtain a dried gel molded product.
- the pressure of the cold isostatic pressing is adjusted so that a desired dry gel molded article density is obtained.
- the dried gel molded body obtained as described above was placed on a Teflon plate in a stainless steel pressure-resistant container with a Teflon inner cylinder filled with distilled water of the same weight as the molded body so as not to come in contact with water. Then, it is allowed to react under autogenous steam pressure in an oven at 180 ° C for 10 hours for crystallization to obtain a zeolite molded body.
- the amount of distilled water at this time is the minimum amount that reaches the saturated steam pressure in the volume of the pressure vessel used, and if it is more than that, there is no restriction from the relationship between the molded body and the distilled water.
- the reaction temperature and time are not particularly limited as long as the crystallization proceeds at a temperature of 130 ° C. or more and for 2 hours or more.
- the lamination of the zeolite membrane on the zeolite molded body thus obtained is as follows. Silica sol, TP AOH solution and TP AB r, and distilled water is added to a predetermined S i 0 2 ZTPAOH / TPAB r / water molar ratio, adjusted, placed in pressure-resistant container, prepared The zeolite compact is immersed in the liquid and reacted in an oven at 100 ° C or higher for at least 1 hour. The mold contains a thick layer with a sufficient thickness and a dense layer on the zeolite compact.
- a zeolite laminated intermediate is formed, a zeolite laminated intermediate is obtained, and the zeolite laminated intermediate is calcined to obtain a zeolite laminated composite.
- Third invention In Example 1, the reaction was carried out in an oven at 180 ° C. for 18 hours to form a zeolite film having a thickness of 20 / zm or more and a dense layer on the zeolite molded body.
- sodium hydroxide and hydroxide may be used to adjust ⁇ ⁇ as necessary.
- An alkali source such as potassium may be added.
- the tetrapropylammonium hydroxide ( ⁇ ) solution is mixed with the silica sol, and the blending ratio of the tetrapropylammonium ion ( ⁇ ) and the silica sol (TPAZS i 0 2 ) Is added in a molar ratio of 0.015 to 0.08, preferably 0.02 to 0.06, and the resulting preparation is atomized, dried, and obtained.
- the dried gel is molded and crystallized to obtain a zeolite molded body, and the obtained zeolite molded body is immersed in a solution having the same or a similar composition as the preparation liquid, hydrothermally synthesized, and formed on the zeolite molded body. Then, a zeolite film containing a mold agent is laminated to form a laminate of a zeolite molded body and a zeolite film containing a mold agent, and the laminate is calcined to simultaneously remove the mold agent. Even if it is characterized by Les,.
- a silica sol and a tetrapropylammonium hydroxide (T PAOH) solution are mixed.
- T PAOH tetrapropylammonium hydroxide
- the raw material of tetrapropylammonium ion (TPA) to be added may be a tetraammonium pyrammonium hydroxide (TPAOH) solution or tetrapropylammonium bromide (TPABr), or a mixture of these two raw materials. It may be done. Also, TPAZS i 0 2 molar ratio of preparation is long is kept in a predetermined amount, in order to adjust the pH if necessary, sodium hydroxide, may be added alkali source such as potassium hydroxide.
- TPAOH tetraammonium pyrammonium hydroxide
- TPABr tetrapropylammonium bromide
- TP AZS i 0 a 0.04 flexural strength is maximized as 2 mole ratio as Yore , tetrapropyl ammonium Niu-ion (TPA) source, tetrapropylammonium ammonium Niu arm It was prepared using a hydroxide (TPAOH) solution.
- the prepared liquid is sprayed by the above-described spraying method and dried to obtain a dried gel.
- the dry gel is formed into a predetermined shape by uniaxial press molding (total pressure 1000 kgf), and then cold isostatic pressing is performed to obtain a dry gel molded body.
- the pressure for the cold isostatic pressing is preferably adjusted in the range of 700 to 7000 kgf / cm 2 so as to obtain a desired dry gel molded article density.
- the dried gel molded body obtained as described above is placed on a Teflon-plated stainless steel pressure-resistant container filled with distilled water of the same weight as the molded body so that it does not come in contact with water, and placed on a Teflon plate. , And reacted under autogenous steam pressure in an oven at 180 ° C for 10 hours to crystallize to obtain a zeolite molded body.
- the amount of distilled water at this time is the minimum amount that reaches the saturated steam pressure in the volume of the pressure vessel used, and if it is more than that, there is no restriction from the relationship between the molded body and the distilled water.
- the reaction temperature and time are not particularly limited as long as the crystallization proceeds at 130 ° C. or more and 2 hours or more.
- the zeolite film is laminated on the zeolite molded body thus obtained as follows. Silica sol, TP AOH solution and TP AB r, and distilled water is added to a predetermined S i 0 2 ZTPAOH / TPAB r water molar ratio, adjusted, placed in pressure-resistant container, preparation The zeolite film is immersed in the glass and allowed to react for 1 hour or more in an oven at 100 ° C or more.
- the zeolite film containing a mold agent consisting of a dense layer with a sufficient thickness on the zeolite molded body Is formed to obtain a zeolite laminated intermediate, and the zeolite laminated intermediate is calcined to obtain a zeolite laminated composite.
- a reaction is carried out in an oven at 180 ° C. for 18 hours to form a zeolite film having a thickness of 20 / zm or more and a dense layer on the zeolite molded body.
- an alkali source such as sodium hydroxide or potassium hydroxide may be added to adjust the pH as needed.
- the same method as in the first and second inventions can be used.
- the obtained dried gel is pulverized in a mortar with a mesh mortar to form a powder that has passed through a mesh of 3 5 5 // m.
- Each rod-shaped compact of mm X 50 mm was obtained.
- the obtained molded body was set on a Teflon plate in a stainless steel pressure-resistant container with a Teflon inner cylinder filled with distilled water of half the weight of the molded body so as not to come in contact with water, and the temperature was set at 180 ° C.
- the reaction was carried out under an autogenous steam pressure for 18 hours in an oven for 1 hour to obtain each zeolite compact.
- the zeolite molded body composed of completely crystallized zeolite has a TPA (tetrapropylammonium ion) -Si 2 mixture ratio (TPA).
- TPA tetrapropylammonium ion
- the obtained dried gel was pulverized in a mortar with a mortar, turned into a powder having a mesh of 3.55 / im, and then subjected to uniaxial pressing with a mold of ⁇ ⁇ ⁇ to obtain a 4 mm X 4 mm x50 mm rod-shaped compacts were obtained.
- the obtained molded body is set on a Teflon plate in a stainless steel pressure-resistant container equipped with a Teflon tube containing half of the weight of the molded body so as not to come in contact with water, and the temperature is set at 130 ° C.
- the reaction was carried out under autogenous steam pressure in an oven for 10 hours to obtain zeolite compacts.
- Example 1 2 First invention (3)
- This sol is placed in a stainless steel 100 m1 pressure-resistant container with a Teflon inner cylinder, in which the zeolite molded body obtained in Example 3 is immersed, and is placed in a 180 ° C oven.
- Example 7 The zeolite molded body obtained in Example 7 was immersed in the same sol as in Example 12, placed in a stainless steel 10 Om1 pressure-resistant container with a Teflon inner cylinder, and ovend at 180 ° C. The reaction was carried out for 18 hours. When the fracture surface after the reaction was observed by SEM, a dense layer similar to that in Example 3 was formed on the zeolite molded body, and it was confirmed from X-ray diffraction that the film was a MFI zeolite membrane. The amorphous part before the film formation was also converted to MFI-type zeolite by the film formation process, and a zeolite laminate intermediate in which a zeolite film was formed on the zeolite body was obtained.
- SEM X-ray diffraction
- the zeolite laminate intermediate obtained as described above was heated to 500 ° C. in an electric furnace and kept for 4 hours to remove tetrapropylammonium. No cracks were observed in the damine test, and no molecules were passed by the pervaporation method of triisopropylbenzene (TIPB), and it was confirmed that the membrane was a crack-free dense zeolite membrane.
- TIPB triisopropylbenzene
- Porous alumina was immersed in the sol prepared in the same manner as in Example 12, and a zeolite film was formed in the same manner as in Example 12.
- Porous silicon nitride was immersed in the sol prepared in the same manner as in Example 12, and a zeolite film was formed in the same manner as in Example 12.
- This film was heated to 500 ° C. in an electric furnace and kept for 4 hours to remove tetrapropylammonium.As shown in Table 3, cracks were generated in the rhodamine test described below. The molecule was also passed by the pervaporation method of triisopropylbenzene, and it was not an airtight membrane.
- Porous mullite was immersed in the sol prepared in the same manner as in Example 12, and a zeolite film was formed in the same manner as in Example 12.
- Porous silica glass was immersed in the sol prepared in the same manner as in Example 12, and a zeolite film was formed in the same manner as in Example 12.
- This film was heated in an electric furnace to 5 ° C and held for 4 hours to remove tetrapropylammonium.As shown in Table 3, cracks were observed in the rhodamine test described below. Molecules were also passed by the pervaporation method of triisopropylbenzene, and it was not an airtight membrane.
- TPAOH tetrapropylammonium bromide
- TPABr tetrapropylammonium bromide
- This dried gel is pulverized in an agate mortar, and the powder that has passed through a mesh of 355 xm mesh is formed into a 5 x 4 x 40 mm rod shape, diameter 18 ⁇ ⁇ , and thickness by uniaxial press molding (total pressure 1 OOO kgf) in a mold. 1.8 mm disks were formed and cold isostatic pressing (1000 kgf / cm 2 ) was performed to obtain molded articles.
- This molded body is placed in a stainless steel 100 ml pressure-resistant container with a Teflon inner cylinder filled with distilled water of the same weight as the molded body weight.
- the microstructure of the fracture surface of the zeolite compact obtained in this way was observed with a scanning electron microscope (SEM) as described above, and the average particle diameter was calculated from the photograph, as shown in Table 4.
- SEM scanning electron microscope
- the mixing ratio of tetrapropylammonium bromide (TPABr) to the total amount of tetrapropylammonium ion (TPA) [TPABr / (TPAOH + TPABr)] force 5, 12.5 , 25, 37.5, 50 mol. It was found that the average particle size increased to 1.5, 2.7, 6.4, 8.8, and 13.9 ⁇ as the ratio increased to / 0 .
- the dried gel was used in the same manner as in Examples 14 to 18 to obtain a zeolite molded body.
- the microstructure of the fracture surface of this zeolite compact was observed with a scanning electron microscope (SEM) in the same manner as in Examples 14 to 18, and from the photograph, the average particle size was calculated.
- SEM scanning electron microscope
- the four-point bending strength of the rod-shaped zeolite molded body was measured in the same manner as in Examples 14 to 18, and as a result, as shown in Table 4, FIG. 9 and FIG. Further, Table 4, as shown in FIG. 11, the pressure loss of the disc-shaped Zeoraito molded body was measured in the same manner as in Example 14 to 18, been made in 0. 3 X 1 3 atm.
- the dried gel was used in the same manner as in Examples 14 to 18 to obtain a zeolite molded body.
- SEM scanning electron microscope
- the microstructure of the fractured surface of this molded body was observed with a scanning electron microscope (SEM) in the same manner as in Examples 14 to 18, it was found that there was no defect and a homogeneous structure with no coarse and dense force particles. Was. Further, when the average particle diameter was calculated from the photograph, the average particle diameter was 7.5 ⁇ .
- Fig. 13 shows a scanning electron microscope (SEM) photograph.
- the four-point bending strength of the rod-shaped zeolite molded body was measured in the same manner as in Examples 14 to 18, and as shown in Table 4, it was 6 MPa. Further, as shown in Table 4 and FIG. 11, when the pressure loss of the disk-shaped zeolite molded body was measured in the same manner as in Examples 14 to 18, it was 0.6 ⁇ 10 3 atm.
- the pressure loss of the disk-shaped zeolite compact was measured. It was 1.8 atm when measured in the same manner as in Examples 14-18.
- the average particle size ( ⁇ m) of the microstructure of the fractured surface of the zeolite compact obtained in Examples 14 to 20 and Comparative Example 16, and the zeolite obtained in Examples 14 to 20 and Comparative Example 16 Table 4 summarizes the results of measuring the four-point bending strength (MPa) and pressure loss (a tm) of the molded body. From Table 4, it can be seen that the zeolite molded bodies obtained in Examples 14 to 20 are practically sufficiently large in average particle diameter and four-point bending strength as compared with the zeolite molded bodies obtained in Comparative Example 16. It can be seen that the pressure loss is extremely small.
- a zeolite laminate composite in which a zeolite film having no defects such as cracks is laminated and formed on a compact (substrate) having extremely small pressure loss, such as the zeolite compact obtained in Examples 14 to 20. It can be seen that if is used as a gas separation membrane such as a molecular sieve membrane or a pervaporation membrane, it can be used as a high-performance membrane with a large amount of gas permeation.
- This sol was put in a stainless steel 100 ml pressure-resistant container with a Teflon inner cylinder, the zeolite molded body of Example 19 was immersed, and reacted in an oven at 180 ° C. for 18 hours.
- SEM scanning electron microscope
- the zeolite laminated intermediate obtained as described above was heated to 500 ° C in an electric furnace and kept for 4 hours to remove tetrapropylammonium (TPA). No crack was observed in the rhodamine test. In addition, the permeation and vaporization of triethylbenzene was confirmed to be a dense, zeolite-laminated composite with no cracks and no passage of molecules.
- TPA tetrapropylammonium
- Example 20 On the zeolite molded body of Example 20, a zeolite laminated intermediate was obtained in the same manner as in Example 21.
- the zeolite laminated intermediate obtained as described above was heated to 500 ° C in an electric furnace and kept for 4 hours to remove tetrapropylammonium (TPA). No crack was observed in the rhodamine test. In addition, the permeation and vaporization of triethylbenzene was confirmed to be a dense, zeolite-laminated composite with no cracks and no passage of molecules.
- TPA tetrapropylammonium
- the cracks generated in the zeolite film due to the difference in thermal expansion are on the molecular level of about 8 to 50 ⁇ , and cannot be detected by SEM. Therefore, in the present invention, the following method was used as a method for measuring the crack.
- rhodamine test In the first method (rhodamine test), rhodamine B is dropped on the zeolite membrane. This method visualizes cracks and observes them with an optical microscope.
- a triisopropylbenzene (TI PB) molecule 20 is sucked by a vacuum pump 22 and passed through a zeolite membrane 21 to form a vacuum gauge. 23 or a method to check for cracks by gas chromatography.
- TI PB triisopropylbenzene
- Embodiment 23 Third Invention (1)
- TPAOH tetrapropylammonium hydroxide
- the slurry was passed through a mesh of 1000 / m mesh, separated and collected from a 5 mm-diameter zirconia cobblestone, and stirred with a magnetic stirrer.
- the slurry is sprayed with a spray dryer (trade name: DL-41, manufactured by Yamato Kagaku Co., Ltd.), spray air pressure 1 kgf / cm 2 , dry air flow rate 0.8 mVm in, liquid flow rate 25 m 1 / min, and blow Drying was performed under the condition of a congealing temperature of 180 ° C to obtain a dried gel granulated powder.
- a spray dryer trade name: DL-41, manufactured by Yamato Kagaku Co., Ltd.
- spray air pressure 1 kgf / cm 2
- dry air flow rate 0.8 mVm in liquid flow rate 25 m 1 / min
- blow Drying was performed under the condition of a congealing temperature of 180 ° C to obtain a dried gel granulated powder.
- the maximum particle size was 40 / zm.
- the dried gel granulated powder thus obtained is formed into a 5 x 4 x 40 mm rod shape and a diameter of 18 mm ⁇ and a disk shape of 1.8 mm thickness by uniaxial press molding (total pressure of 1000 kgf). Cold isostatic pressing (total pressure 2500 kgf / cm 2 ) was performed to obtain a compact.
- the microstructure of the fractured surface of the zeolite compact obtained in this way was observed with a scanning electron microscope (SEM), and the homogeneity was calculated from the photograph, and the area of the healthy part was 100%. As shown in FIGS. 25 and 26, the particles were homogeneous without any shedding of particles and without coarse and dense particles. The average particle size was 0.8 m from the SEM photograph.
- the four-point bending strength of the rod-shaped zeolite molded body was measured in accordance with JIS R 1601, and the bending strength was 25 MPa.
- the pressure loss of the disk-shaped zeolite molded product was measured and found to be 0.18 atm.
- TPAOH tetrapropylammonium hydroxide
- This dried gel is formed into a 5 x 4 x 40 mm rod and a disk with a diameter of 18 mm 0 and a thickness of 1.8 mm by uniaxial press molding (total pressure l OOO kgf), and cold isostatic pressing ( 1000 kgf Zcm 2 ) to obtain a molded body.
- the molded body was reacted in an oven at 180 ° C. for 10 hours under autogenous steam pressure in the same manner as in Example 23 to obtain a zeolite molded body.
- the microstructure of the fractured surface of this zeolite compact was observed with a scanning electron microscope (SEM) in the same manner as in Example 23, and the area of the healthy part was 100 ° / 0 . As shown in Fig. 29, it had a homogeneous structure with no defects and no coarse and dense particles. Further, when the average particle diameter was calculated from the photograph, the average particle diameter was 7.5 ⁇ m.
- the four-point bending strength of the rod-shaped zeolite molded body was measured in the same manner as in Example 23, and was 6 MPa. Further, the pressure loss of the disk-shaped zeolite molded body was measured to be 0.6 ⁇ 10 3 atm.
- the dried gel was pulverized in a Menor mortar and passed through a mesh having a mesh size of 355 ⁇ m. As shown in FIG. 30, when the microstructure of the outer surface of the pulverized dried gel was observed by SEM, many angular particles of about 50 im were observed.
- the dried gel thus obtained is formed into a 5 x 4 x 4 Omm rod and a disk with a diameter of 18 mm0 and a thickness of 1.8 mm by uniaxial press molding (total pressure of 1000 kgf), and then cold-statically. Hydraulic molding (1000 kgf Zcm 2 ) was performed to obtain a molded body.
- the microstructure of the fracture surface of the zeolite compact obtained in this way was observed with a scanning electron microscope (SEM), and the homogeneity was calculated from the photograph. As shown in FIG. 31 and FIG. 32, the presence of defects due to shedding and the appearance of partially dense particles were observed. The average particle diameter was found to be 0.8 ⁇ m from the SEM photograph.
- the zeolite molded bodies obtained in Examples 23 and 24 have an extremely large sound area (no defect) as compared with the zeolite molded bodies obtained in Comparative Example 17.
- the average particle size and the four-point bending strength are sufficiently large for practical use, and the pressure loss is extremely small. Therefore, a zeolite laminate composite in which a zeolite film free from defects such as cracks is laminated and formed on a molded body (substrate) having extremely small pressure loss, such as the zeolite molded bodies obtained in Examples 23 and 24.
- a gas separation membrane such as a molecular sieve membrane or a pervaporation membrane, it can be used as a high-performance membrane with a large amount of gas permeation. Table 5
- Embodiment 25 Third Invention (4)
- This sol was placed in a stainless steel 100 m 1 pressure-resistant container with a Teflon inner cylinder, the zeolite molded body obtained in Example 23 was immersed, and reacted in an oven at 180 ° C. for 18 hours.
- SEM scanning electron microscope
- a dense layer of about 25 im was formed on the zeolite molded body.
- X-ray diffraction confirmed that the dense film was an MFI type zeolite film.
- the zeolite laminated intermediate obtained as described above was heated to 500 ° C in an electric furnace and kept for 4 hours to remove tetrapropylammonium (TPA). No crack was observed in the rhodamine test. In addition, even if the pervaporation method of triethylbenzene is used, it is confirmed that the composite is a dense zeolite laminate without any passage of molecules and without cracks.
- TPA tetrapropylammonium
- Embodiment 26 Third Invention (5)
- a zeolite laminated intermediate was obtained on the zeolite molded body obtained in Example 24 in the same manner as in Example 25.
- the zeolite laminate intermediate obtained as above was heated in an electric furnace to 500 ° C. and kept for 4 hours to remove tetrapropylammonium (TPA). No permeation was observed, and it was confirmed by the permeation and vaporization method of triethylbenzene that there was no passage of molecules and that the composite was a dense zeolite laminate without cracks.
- TPA tetrapropylammonium
- a zeolite membrane can be formed and maintained thereon without generating cracks, and when used as a gas separation membrane such as a molecular sieve membrane or a pervaporation membrane, the pressure loss is reduced.
- a zeolite molded product that satisfies both the reduction and the maintenance and improvement of mechanical strength, a zeolite laminated intermediate in which a zeolite film containing a molding agent is formed on this zeolite molded product, and this zeolite laminated intermediate is temporarily
- the laminated zeolite composite formed by baking and the method for producing the same can be mentioned.
- the present invention relates to a field in which a high-performance separation membrane and a high-performance catalyst carrier are required, and a field in which heat resistance and chemical resistance are required (for example, petrochemical, water treatment, chemical, and food fields). Etc.) are used particularly effectively.
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU36019/01A AU770058B2 (en) | 2000-03-02 | 2001-03-01 | Zeolite formed product, zeolite laminate intermediate, zeolite laminate composite and method for their preparation |
MXPA01011148A MXPA01011148A (es) | 2000-03-02 | 2001-03-01 | Cuerpo perfilado de zeolita cuerpo intermedio estratificado de zeolita, material compuesto estratificado de zeolita y metdo de produccion para los mismos. |
BR0104781-7A BR0104781A (pt) | 2000-03-02 | 2001-03-01 | Corpo modelado por zeólito, corpo intermediário de zeólito, compósito em camadas de zeólito e método para produção dos mesmos |
EP01908193.4A EP1232999B1 (en) | 2000-03-02 | 2001-03-01 | Zeolite formed product, zeolite laminate intermediate, zeolite laminate composite and method for their preparation |
US11/521,008 US7608554B2 (en) | 2000-03-02 | 2006-09-14 | Zeolite formed product, zeolite laminate intermediate, zeolite laminate composite and method for their preparation |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-57453 | 2000-03-02 | ||
JP2000057453A JP4459369B2 (ja) | 2000-03-02 | 2000-03-02 | 多孔質基体、ゼオライト複合膜及びその製造方法 |
JP2001040598A JP4531997B2 (ja) | 2001-02-16 | 2001-02-16 | ゼオライト成形体、ゼオライト積層中間体、ゼオライト積層複合体及びそれらの製造方法 |
JP2001-40598 | 2001-02-16 | ||
JP2001-40532 | 2001-02-16 | ||
JP2001040532A JP4584474B2 (ja) | 2001-02-16 | 2001-02-16 | ゼオライト成形体、ゼオライト積層中間体及びゼオライト積層複合体の製造方法 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/980,260 A-371-Of-International US20030039609A1 (en) | 2000-03-02 | 2001-03-01 | Zeolite formed product, zeolite laminate intermediate, zeolite laminate composite and method for their preparation |
US11/521,008 Division US7608554B2 (en) | 2000-03-02 | 2006-09-14 | Zeolite formed product, zeolite laminate intermediate, zeolite laminate composite and method for their preparation |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001064583A1 true WO2001064583A1 (fr) | 2001-09-07 |
Family
ID=27342566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/001562 WO2001064583A1 (fr) | 2000-03-02 | 2001-03-01 | Produit forme en zeolite, intermediaire pour stratifie en zeolite, composite a stratifie en zeolite et procede pour leur elaboration |
Country Status (7)
Country | Link |
---|---|
US (2) | US20030039609A1 (ja) |
EP (1) | EP1232999B1 (ja) |
CN (1) | CN1372531A (ja) |
AU (1) | AU770058B2 (ja) |
BR (1) | BR0104781A (ja) |
MX (1) | MXPA01011148A (ja) |
WO (1) | WO2001064583A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6953493B2 (en) | 2001-09-17 | 2005-10-11 | Ngk Insulators, Ltd. | Method for preparing DDR type zeolite membrane, DDR type zeolite membrane, and composite DDR type zeolite membrane, and method for preparation thereof |
CN1307096C (zh) * | 2002-08-16 | 2007-03-28 | 日本碍子株式会社 | 沸石成型体的制备方法和沸石层压复合体的制备方法 |
JP2013177312A (ja) * | 2005-10-12 | 2013-09-09 | Basf Se | ケイ酸塩の製造方法 |
CN107073409A (zh) * | 2014-11-25 | 2017-08-18 | 日本碍子株式会社 | 沸石膜结构体的制造方法 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2003252319B2 (en) * | 2000-03-02 | 2006-01-19 | Ngk Insulators, Ltd | Porous zeolite shaped body |
JP4494685B2 (ja) * | 2001-09-17 | 2010-06-30 | 日本碍子株式会社 | ゼオライト積層複合体及びその製造方法 |
US7442367B2 (en) | 2002-08-16 | 2008-10-28 | Ngk Insulators, Ltd. | Production method for zeolite shaped body and production method for zeolite layered composite |
US20040214377A1 (en) * | 2003-04-28 | 2004-10-28 | Starkovich John A. | Low thermal expansion adhesives and encapsulants for cryogenic and high power density electronic and photonic device assembly and packaging |
US20050063901A1 (en) * | 2003-09-24 | 2005-03-24 | Miller Stephen J. | Preparation of molecular sieves involving spray drying |
US7119686B2 (en) * | 2004-04-13 | 2006-10-10 | Midtronics, Inc. | Theft prevention device for automotive vehicle service centers |
US8431508B2 (en) * | 2007-10-30 | 2013-04-30 | Cerahelix, Inc. | Inorganic structure for molecular separations |
US8431509B2 (en) | 2007-10-30 | 2013-04-30 | Cerahelix, Inc. | Structure for molecular separations |
WO2013129625A1 (ja) * | 2012-02-29 | 2013-09-06 | 日本碍子株式会社 | セラミック分離膜及び脱水方法 |
CN107303506B (zh) * | 2016-04-21 | 2019-10-15 | 中国石油化工股份有限公司 | 一种石蜡烃择型异构化催化剂的预处理方法 |
JP6757606B2 (ja) * | 2016-06-21 | 2020-09-23 | 日立造船株式会社 | Mfi型ゼオライト(シリカライト)を用いた分離膜の製造方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0152485A1 (en) * | 1983-03-09 | 1985-08-28 | Toa Nenryo Kogyo Kabushiki Kaisha | Binder-free zeolite catalyst, process for its preparation, and catalytic reaction using same |
JPS6172621A (ja) * | 1984-09-14 | 1986-04-14 | Toa Nenryo Kogyo Kk | バインダ−レスゼオライト成型物及びその製造方法 |
JPH05146684A (ja) * | 1991-08-21 | 1993-06-15 | Nikko Kyodo Co Ltd | 芳香族炭化水素製造用成形触媒の製造方法 |
JPH06183727A (ja) * | 1992-12-22 | 1994-07-05 | Tosoh Corp | CaX型ゼオライト成形体およびその製造方法 |
EP0778076A1 (fr) * | 1995-12-08 | 1997-06-11 | Institut Francais Du Petrole | Procédé d'élaboration de membranes de zéolithe supportées et membranes obtenues |
WO2000023378A1 (fr) * | 1998-10-20 | 2000-04-27 | Ngk Insulators, Ltd. | Film composite de zeolithe et procede de production de celui-ci |
JP2000327327A (ja) * | 1999-05-24 | 2000-11-28 | Kubota Corp | ゼオライト成形体の製造方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4387258A (en) * | 1981-01-28 | 1983-06-07 | Exxon Research & Engineering Co. | Selective hydrogenation using palladium/platinum on crystalline silica polymorph/silicalite/high silica zeolite |
US6063723A (en) * | 1990-03-02 | 2000-05-16 | Chevron U.S.A. Inc. | Sulfur tolerant zeolite catalyst |
ATE155706T1 (de) * | 1992-03-27 | 1997-08-15 | Stichting Energie | Membran für die trennung von kleinen molekülen und verfahren zu ihrer herstellung |
DE4216846A1 (de) * | 1992-05-21 | 1993-11-25 | Basf Ag | Verfahren zur Fixierung großer zeolithischer und zeolithanaloger Molekularsieb-Kristalle auf Formkörper |
US5549881A (en) * | 1994-02-24 | 1996-08-27 | Exxon Research And Engineering Company | Process for preparing a seeded high-silica zeolite having the faujasite topology |
US5824617A (en) * | 1994-07-08 | 1998-10-20 | Exxon Research & Engineering Company | Low alkaline inverted in-situ crystallized zeolite membrane |
KR0165014B1 (ko) * | 1996-03-11 | 1999-01-15 | 선우현범 | 섬유상 제올라이트 zsm-5 및 그 제조 방법 |
US6004527A (en) * | 1997-09-29 | 1999-12-21 | Abb Lummus Global Inc. | Method for making molecular sieves and novel molecular sieve compositions |
US6037292A (en) * | 1998-07-02 | 2000-03-14 | Exxon Research And Engineering Co. | Compositions having two or more zeolite layers |
GB2340112A (en) * | 1998-07-02 | 2000-02-16 | Exxon Chemical Patents Inc | Molecular sieve compositions |
DE60036508T2 (de) * | 1999-06-18 | 2008-06-26 | Nippon Shokubai Co., Ltd. | Formling aus binderfreien Zeolith , Verfahren zu seiner Herstellung und seine Verwendung |
-
2001
- 2001-03-01 CN CN01801151A patent/CN1372531A/zh active Pending
- 2001-03-01 MX MXPA01011148A patent/MXPA01011148A/es active IP Right Grant
- 2001-03-01 WO PCT/JP2001/001562 patent/WO2001064583A1/ja active IP Right Grant
- 2001-03-01 AU AU36019/01A patent/AU770058B2/en not_active Ceased
- 2001-03-01 EP EP01908193.4A patent/EP1232999B1/en not_active Expired - Lifetime
- 2001-03-01 US US09/980,260 patent/US20030039609A1/en not_active Abandoned
- 2001-03-01 BR BR0104781-7A patent/BR0104781A/pt not_active Application Discontinuation
-
2006
- 2006-09-14 US US11/521,008 patent/US7608554B2/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0152485A1 (en) * | 1983-03-09 | 1985-08-28 | Toa Nenryo Kogyo Kabushiki Kaisha | Binder-free zeolite catalyst, process for its preparation, and catalytic reaction using same |
JPS6172621A (ja) * | 1984-09-14 | 1986-04-14 | Toa Nenryo Kogyo Kk | バインダ−レスゼオライト成型物及びその製造方法 |
JPH05146684A (ja) * | 1991-08-21 | 1993-06-15 | Nikko Kyodo Co Ltd | 芳香族炭化水素製造用成形触媒の製造方法 |
JPH06183727A (ja) * | 1992-12-22 | 1994-07-05 | Tosoh Corp | CaX型ゼオライト成形体およびその製造方法 |
EP0778076A1 (fr) * | 1995-12-08 | 1997-06-11 | Institut Francais Du Petrole | Procédé d'élaboration de membranes de zéolithe supportées et membranes obtenues |
WO2000023378A1 (fr) * | 1998-10-20 | 2000-04-27 | Ngk Insulators, Ltd. | Film composite de zeolithe et procede de production de celui-ci |
JP2000327327A (ja) * | 1999-05-24 | 2000-11-28 | Kubota Corp | ゼオライト成形体の製造方法 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6953493B2 (en) | 2001-09-17 | 2005-10-11 | Ngk Insulators, Ltd. | Method for preparing DDR type zeolite membrane, DDR type zeolite membrane, and composite DDR type zeolite membrane, and method for preparation thereof |
US7014680B2 (en) | 2001-09-17 | 2006-03-21 | Ngk Insulators, Ltd. | Method for preparing DDR type zeolite membrane, DDR type zeolite membrane, and composite DDR type zeolite membrane, and method for preparation thereof |
CN1307096C (zh) * | 2002-08-16 | 2007-03-28 | 日本碍子株式会社 | 沸石成型体的制备方法和沸石层压复合体的制备方法 |
JP2013177312A (ja) * | 2005-10-12 | 2013-09-09 | Basf Se | ケイ酸塩の製造方法 |
CN107073409A (zh) * | 2014-11-25 | 2017-08-18 | 日本碍子株式会社 | 沸石膜结构体的制造方法 |
US10625215B2 (en) | 2014-11-25 | 2020-04-21 | Ngk Insulators, Ltd. | Method for manufacturing zeolite membrane structure |
Also Published As
Publication number | Publication date |
---|---|
US20030039609A1 (en) | 2003-02-27 |
EP1232999A1 (en) | 2002-08-21 |
US7608554B2 (en) | 2009-10-27 |
MXPA01011148A (es) | 2002-06-04 |
BR0104781A (pt) | 2002-02-13 |
EP1232999A4 (en) | 2007-04-25 |
AU770058B2 (en) | 2004-02-12 |
EP1232999B1 (en) | 2018-07-25 |
US20070014717A1 (en) | 2007-01-18 |
CN1372531A (zh) | 2002-10-02 |
AU3601901A (en) | 2001-09-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7608554B2 (en) | Zeolite formed product, zeolite laminate intermediate, zeolite laminate composite and method for their preparation | |
EP1123898B1 (en) | Zeolite composite film and process for producing the same | |
US10933382B2 (en) | Supported zeolite membranes | |
JP5087644B2 (ja) | Zsm−5型ゼオライト膜の製造方法 | |
CN106045487A (zh) | 一种Al2O3、SiO2多孔陶瓷膜支撑体的制备方法 | |
CN102309928B (zh) | 防止热裂解的沸石分离膜及其制作方法 | |
JP4751996B2 (ja) | Zsm−5型ゼオライト膜の製造方法 | |
EP1428568A1 (en) | Laminated zeolite composite and method for preparation thereof | |
JP2007222820A (ja) | ゼオライト分離膜の製造方法 | |
JP2005074382A (ja) | 混合物分離膜、混合物分離方法 | |
JP4313307B2 (ja) | ゼオライト成形体の製造方法及びゼオライト積層複合体の製造方法 | |
JP3953833B2 (ja) | ゼオライト成形体及び製造方法 | |
JP2008521738A (ja) | ゼオライト膜およびその製造方法 | |
JP4531997B2 (ja) | ゼオライト成形体、ゼオライト積層中間体、ゼオライト積層複合体及びそれらの製造方法 | |
JP4459369B2 (ja) | 多孔質基体、ゼオライト複合膜及びその製造方法 | |
JP4584474B2 (ja) | ゼオライト成形体、ゼオライト積層中間体及びゼオライト積層複合体の製造方法 | |
US10005674B2 (en) | Silica support structure for a zeolite membrane | |
AU2003248380B2 (en) | Porous zeolite shaped body | |
Li et al. | Organotemplate-free synthesis of ZSM-5 membrane for pervaporation dehydration of isopropanol | |
WO2022202454A1 (ja) | 分離膜及びその製造方法 | |
JPH10235172A (ja) | セラミックス多孔質膜、これを用いたセラミックス多孔質体及びこれらの製造方法 | |
JP2002255539A (ja) | ゼオライト成形体及びその製造方法並びにゼオライト積層複合体 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 01801151.9 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: PA/a/2001/011148 Country of ref document: MX Ref document number: 09980260 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2001/09188 Country of ref document: ZA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2001908193 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 36019/01 Country of ref document: AU |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWP | Wipo information: published in national office |
Ref document number: 2001908193 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 36019/01 Country of ref document: AU |