| Patents for C01B 39 - Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination (11,724) |
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| 07/09/1991 | US5030337 Catalytic conversion of an organic charge using new crystalline aluminosilicate |
| 07/03/1991 | EP0435625A2 Synthesis of faujasite |
| 07/02/1991 | US5028406 Crystalline galliosilicate with the mordenite structure |
| 06/30/1991 | CA2032845A1 Synthesis of faujasite |
| 06/26/1991 | EP0434052A2 Modified crystalline aluminosilicate and method of preparing the same |
| 06/26/1991 | CN1052475A Catalytic dehydrocyclodimerization process for producing aromatic hydrocarbons from aliphatic hydrocarbons |
| 06/25/1991 | US5026943 Catalytic conversion over catalyst comprising synthetic crystal MCM-35 |
| 06/25/1991 | US5026532 Batch processing, heating mixture of aluminum, sodium and potassium hydroxide, tetramethylammonium hydroxide and silica source |
| 06/22/1991 | CA2032987A1 Levyne type zeolite and process for preparing the same |
| 06/19/1991 | EP0433156A1 Process for preparation of zeolites 5A of great stability and applicable particularly in the separation of paraffins |
| 06/13/1991 | WO1991008172A1 Crystalline galliosilicate with the mordenite structure |
| 06/13/1991 | WO1991006616A3 Process for reforming petroleum hydrocarbon stocks |
| 06/13/1991 | WO1991006367A3 Zeolite l |
| 06/12/1991 | EP0431660A2 Crystalline aluminophosphates and related compounds |
| 06/12/1991 | CN1012800B Omega zeolite of stabilization and dealuminium |
| 06/11/1991 | US5023066 Process for introduction of silicon atoms instead of aluminum atoms in the crystal lattice of a zeolite of the faujasite type |
| 06/05/1991 | CN1012727B Silica-bound calcium-containing zeolite granulate |
| 06/04/1991 | US5021607 Titanium containing silicate catalyst |
| 06/04/1991 | US5021141 Mixing alkali or alkaline earth metal compounds, metal oxides, water and hexamethyleneimine, and recovering crystals |
| 05/29/1991 | EP0428576A1 Removal of coarse particles from aluminosilicate aqueous suspensions by wet grinding |
| 05/28/1991 | US5019543 High silica crystalline zeolites and process for their preparation |
| 05/28/1991 | US5019263 Membrane composed of a pure molecular sieve |
| 05/28/1991 | CA1284510C Xylene isomerization |
| 05/25/1991 | CA2030663A1 Crystalline aluminophosphates and related compounds |
| 05/22/1991 | EP0428506A2 Zeolite L |
| 05/21/1991 | US5017353 Recycled zeolite L preparation |
| 05/16/1991 | WO1991004943A3 Zeolite aggregates and catalysts |
| 05/15/1991 | EP0427579A1 Mordenite type zeolithe and process for producing the same |
| 05/15/1991 | EP0427577A1 Aqueous zeolite suspension comprising of a silicon resin |
| 05/14/1991 | US5015454 Roasting a reaction mixture of alkali metal aluminum silicates |
| 05/14/1991 | US5015453 Crystalline group IVA metal-containing molecular sieve compositions |
| 05/07/1991 | US5013700 Water washing, acid leaching, heat treatment |
| 05/07/1991 | US5013537 Process for the synthesis of zeolites of the ferrisilicate type, products so obtained |
| 05/07/1991 | US5013536 ECR-18, method of its preparation, and uses for sorption and separation |
| 05/07/1991 | US5013535 Treatment with boric acid, stabilizing crystal structure, molecular sieves |
| 05/02/1991 | EP0425029A2 Crystalline aluminophosphates |
| 05/01/1991 | WO1991006616A2 Process for reforming petroleum hydrocarbon stocks |
| 05/01/1991 | WO1991006367A2 Zeolite l |
| 04/30/1991 | US5011667 Self-bound sodium chabazite aggregates and methods for preparation thereof |
| 04/30/1991 | US5011591 Large-pored crystalline titanium molecular sieve zeolites |
| 04/30/1991 | CA1283648C Zeolite ssz-25 |
| 04/30/1991 | CA1283647C Layered silicates and their synthesis |
| 04/30/1991 | CA1283646C Layered metal oxides containing interlayer oxides and their synthesis |
| 04/28/1991 | CA2028515A1 Crystalline aluminophosphates and related compounds |
| 04/24/1991 | EP0424187A1 Process for the preparation of pillared clays and the pillared clays obtained from the process |
| 04/24/1991 | EP0423532A2 Method for the preparation of synthetic fine crystalline metal silicates |
| 04/24/1991 | EP0423530A1 Process for the preparation of a metal-containing synthetic crystalline borosilicate |
| 04/24/1991 | EP0423134A1 Catalysts for olefin and paraffin conversion |
| 04/23/1991 | US5010048 Zeolite containing fluoride |
| 04/17/1991 | EP0422998A1 Aqueous zeolite suspensions containing a siliconate |
| 04/17/1991 | EP0422997A1 Stable aqueous zeolite suspensions containing a succinoglycane |
| 04/17/1991 | EP0422202A1 Opacifying kaolin pigments and process for making same |
| 04/17/1991 | EP0422013A1 Method for intercalating organic-swelled layered metal chalcogenide with polymer chalogenide by treatment with organic, hydrolyzable, polymeric chalcogenide precursor wherein organic hydrolysis by-products are removed |
| 04/16/1991 | US5008094 Alkali or alkaline earth metal silicates with specific molar ratios and containing tetramethylammonium ion |
| 04/16/1991 | US5007997 Zeolite SSZ-26 |
| 04/10/1991 | EP0421875A1 Process for the thermal activation of zeolites by the percolation of hot gases |
| 04/10/1991 | EP0421422A2 Novel faujasite-type aluminosilicates, a method of producing the same, and hydrocracking catalysts for heavy hydrocarbon oils |
| 04/10/1991 | CA2027013A1 Zeolite suspension containing a silicon resin |
| 04/10/1991 | CA2027012A1 Zeolite suspension containing a siliconate |
| 04/10/1991 | CA2027011A1 Stable zeolite suspensions containing a succinoglycane |
| 04/04/1991 | WO1991004226A1 Synthesis of aluminosilicate zeolites with faujasite structure |
| 04/04/1991 | WO1991004096A1 Removal of mercury from fluids by contact with activated zeolite a |
| 04/03/1991 | EP0419581A1 Method for intercalating organic-swelled layered metal chalcogenide with a polymeric chalcogenide by plural treatments with polymeric chalcogenide precursor |
| 04/02/1991 | CA1282398C Synthesis of zeolites zsm-22 and zsm-23 |
| 04/02/1991 | CA1282397C Zeolite l |
| 03/30/1991 | WO1991004943A2 Zeolite aggregates and catalysts |
| 03/27/1991 | EP0419334A1 Zeolite of the beta type and method for its preparation |
| 03/27/1991 | EP0419307A1 Zeolite of the mazzite family, method for its synthesis and its use as a catalyst |
| 03/19/1991 | US5000932 Mazzite-type zeolite, ECR-15, and a process for preparing it |
| 03/19/1991 | CA1281700C Zeolite ssz-23 |
| 03/13/1991 | CN1011966B Catalytic system for production of aromatics form aliphatic hydrocarbons |
| 03/05/1991 | CA1281021C Layered silicate |
| 03/01/1991 | EP0423134A4 Catalysts for olefin and paraffin conversion. |
| 02/26/1991 | US4996034 Treating aluminum silicates with aqueous solution of fluorosilicate salts, washing |
| 02/26/1991 | US4995964 Catalyst selectivity, stability |
| 02/26/1991 | US4995963 Acid catalyzed hydrocracking and isomerization of petroleum feedstocks |
| 02/21/1991 | WO1991001940A1 Synthesis of faujasitic structure gallosilicate zeolites |
| 02/20/1991 | EP0413138A1 Y zeolites preparation process |
| 02/20/1991 | CN1011689B Crystalline gallophosphate compositions |
| 02/19/1991 | US4994425 Magnesia-silica cogels with controlled porosity for hydrorefining catalysts |
| 02/19/1991 | US4994251 Free of organic nitrogen; seeding with desired zeolite, ZSM-5 OR ZSM-11 |
| 02/19/1991 | US4994250 Process for synthesizing a molecular sieve having the offretite structure and containing aluminum and gallium |
| 02/19/1991 | US4994249 Containing strontium; hydrocracking, reforming, saparation |
| 02/07/1991 | DE3924565A1 Prepn. of zeolite f from power plant waste - with alkali under defined conditions of molar ratios, temp. and duration |
| 02/07/1991 | DE3924564A1 Prepn. of zeolite from power plant waste - with alkali under defined conditions of molar ratios, temp, and duration |
| 02/06/1991 | CN1011505B Titanium-aluminum-silicon-oxide molecular sieve compositions |
| 02/06/1991 | CN1011489B Process for preparation of new magnesium alkali-zeolite |
| 02/05/1991 | US4990715 Producing aromatic hydrocarbons with catalysts containing gallium and silver |
| 01/30/1991 | CN1048835A Producing method for rich silicon molecular sieve by crystal skeleton |
| 01/24/1991 | WO1991000845A1 Synthesis of zeolite zsm-35 |
| 01/24/1991 | DE3923462A1 Prepn. of cubic sodium zeolite - by reacting glassy waste from power station with alkali under specific conditions |
| 01/23/1991 | EP0408664A1 Synthesis of a crystalline molecular sieve |
| 01/22/1991 | US4986989 Zeolite fungicide |
| 01/16/1991 | EP0214147B1 Crystalline magnesia-silica composites and process for producing same |
| 01/16/1991 | CN1011224B Process for preparation of ferrierite and its use as dewaxing catalyst (carrier) |
| 01/15/1991 | US4985223 Crystalline aluminosilicate |
| 01/15/1991 | CA1279058C Zeolite ssz-24 |
| 01/10/1991 | DE3922508A1 Producing silicic acid and acid solns. of aluminium salts, etc. - by reacting glassy residue from fossil fuel reactors with mineral acids |
| 01/09/1991 | EP0407203A1 High silica crystalline zeolites and process for their preparation |
| 01/09/1991 | EP0406474A2 Synthetic crystalline aluminosilicate and process for its preparation |