Patents
Sitemap › B01 - Physical or chemical processes or apparatus in general › B01J - Chemical or physical processes, e.g. catalysis, colloid chemistry; Their relevant apparatus › B01J 37 - Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
Patents for B01J 37 - Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts (39,240)
10/1991
10/24/1991DE4032610A1 Shape stable hollow catalyst support - formed by metallising lost pattern of convolute shape, used in organic synthesis and flue gas cleaning
10/23/1991EP0452630A1 Process for the reconditioning of catalysts
10/23/1991EP0452619A1 Pressed titanium dioxide, process for its manufacture and its use
10/22/1991US5059731 Process of reduction of a refining catalyst before its use
10/22/1991US5059567 Process for the preparation of a modified zeolite
10/22/1991US5059367 Adding water, binder, plasticizer to alumina powder; kneading; extruding, pre-sintering, cooling, interior; sintering; gas-tight, heat resistant
10/17/1991WO1991016132A1 Process of vapor phase catalytic hydrogenation of maleic anhydride to gamma-butyrolactone in high conversion and high selectivity using an activated catalyst
10/17/1991CA2080123A1 Process of vapor phase catalytic hydrogenation of maleic anhydride to gamma-butyrolactone in high conversion and high selectivity using an activated catalyst
10/16/1991EP0452085A2 The production of methyl amines
10/16/1991EP0452084A2 Process for the conversion of propane und butane
10/16/1991EP0451640A2 Process for producing catalyst composition for use in hydrodesulfurization of hydrocarbon oil and process for hydrodesulfurizing hydrocarbon oil
10/16/1991EP0202304B1 Cracking catalysts and process using non-zeolitic molecular sieves
10/16/1991CN1055303A Catalytic composition for dehydro-genation of c2-c5 paraffins
10/15/1991US5057483 Catalyst composition containing segregated platinum and rhodium components
10/15/1991US5057470 Regeneration of noble metal catalysts used in hydrodehalogenation of halogen-substituted hydrocarbons containing fluorine and at least one other halogen
10/15/1991CA1290738C Attrition-resistant catalyst composition, method of making and use
10/09/1991EP0450680A2 Catalysts and impregnation solutions preparation process
10/08/1991US5055620 Heating in the presence of a catalyst to condense a ketone; mixing a water soluble acid and pseudoboehmite to form a dispersion, adding magnesium oxide or hydroxide, agitation, drying and calcining
10/08/1991US5055599 Process for the hydrogenation of maleic anhydride to tetrahydrofuran and gamma-butyrolactone
10/08/1991US5055443 Attrition resistant agglomerates of active alumina
10/08/1991US5055441 Spray-freezing solution of molybdic acid or mixture with tungstic acid, freeze drying, heating
10/08/1991CA1290354C Process for the selective hydrogenation of alkynes
10/03/1991WO1991014713A1 Catalyst system of enhanced productivity
10/02/1991EP0448976A2 The use of an amorphous alloy catalyst for decomposition of chlorofluorocarbons
10/02/1991EP0448585A1 Process for the production of a catalyst for the removal of oxides of nitrogen from exhaust gases.
10/01/1991US5053580 From mixtures of vaporized chromyl chloride, titanium tetrachloride, and vanadyl chloride by laser pyrolysis
10/01/1991US5053578 Lower alkane conversion
10/01/1991US5053380 Cu-al catalyst for hydrogenation
10/01/1991US5053379 High-activity nickel catalyst and process for preparation thereof
10/01/1991US5053376 Method of preparing a sulfided molybdenum catalyst concentrate
10/01/1991US5053374 Homogeneous, mixture with binder; extrusion drying calcining; acid stagle; useful in hydrocarbon conversion processes
09/1991
09/25/1991EP0448435A1 Process for the presulfurization of hydrocarbon treatment catalysts
09/25/1991EP0448366A1 Method for pretreating a reforming catalyst
09/25/1991EP0448117A1 Process for producing a catalyst composition for hydrodesulphurization of hydrocarbon oil.
09/25/1991EP0180646B1 Composition
09/25/1991CN1014033B Catalyst for purifying motor vehicle exhaust gases and process for production thereof
09/24/1991WO1991014500A1 Ceramic materials, method of preparing the same and hydrogenation and oxidation processes using the same
09/24/1991US5051389 Catalyst composition prepared by vapor depositing onto a carbon support
09/24/1991US5051384 Method for pretreating a reforming catalyst
09/24/1991CA2078881A1 Ceramic materials, method of preparing the same and hydrogenation and oxidation processes using the same
09/23/1991CA2038684A1 Method for pretreating a reformong catalyst
09/19/1991WO1991013831A1 Magnesium aluminate with controlled surface area
09/19/1991WO1991013714A1 Process for manufacturing metallic or ceramic materials
09/19/1991DE4033227A1 Metallic or ceramic article prodn. - by moulding or casting film-forming material contg. metals or ceramic raw materials
09/18/1991EP0447221A1 A method of presulfiding a hydrotreating hydrocracking or tail gas treating catalyst
09/18/1991EP0447005A2 Catalyst preparation process
09/18/1991EP0446710A1 The use of an amorphous alloy catalyst for conversion of carbon dioxide
09/18/1991EP0446481A1 Reduced and stabilized hydrogenation catalyst
09/17/1991US5049536 Catalytically active silica and alumina gel and process for preparing it
09/17/1991US5049206 Metal-made carrier body for exhaust gas cleaning catalyst and production of the carrier body
09/17/1991CA2038304A1 Catalyst preparation process
09/12/1991DE4107191A1 Iridium catalyst for hydrazinolysis - prepd. on aluminium oxide carrier of large surface area
09/12/1991DE4006935A1 Fluidised bed appts. for mixing, drying and coating bulk solids - has support tube concentrically placed around down pipe to form ring shaped aperture in mixing chamber
09/11/1991EP0445163A1 High surface area cordierite catalyst support structures
09/11/1991CN1054412A Method of coating ceramic honeycomb members with finely-divided solids
09/11/1991CN1013832B Purification catalyst comprised of palladium, platinum and zeolite for organic waste gas
09/11/1991CN1013831B Halosilane catalyst and process for making same
09/10/1991US5047381 Laminated substrate for catalytic combustor reactor bed
09/10/1991US5047380 Ceramic materials, method of preparing the same and hydrogenation and oxidation processes using the same
09/10/1991US5047379 Catalysts
09/10/1991US5047378 Exhaust gas-purifying catalyst and process for purifying exhaust gases
09/10/1991US5047141 Larger pore molecular sieves of controlled activity
09/05/1991WO1991012887A1 Microspheres coated with catalyst and methods of producing same
09/04/1991EP0444495A1 Process for improving the thermal shock resistance of monolithic catalysts
09/04/1991EP0444494A1 Method of coating a ceramic honeycomb material with finely divided solids
09/04/1991EP0444470A1 High surface area ceria
09/04/1991EP0444180A1 Gas-solid photocatalytic oxidation of environmental pollutants
09/04/1991CN1054252A Method of synthesising a selective olefin hydrogenation catalyst
09/03/1991US5045519 Process for the preparation of a catalyst carrier based on aluminosilicates
09/03/1991US5045518 Presufiding
09/03/1991US5045516 Pure Titanium Oxide, Molybdenum trioxide
09/03/1991US5045288 Gas-solid photocatalytic oxidation of environmental pollutants
08/1991
08/28/1991EP0443765A1 Catalyst composition containing segregated platinum and rhodium components
08/28/1991EP0443167A1 Trimerization-catalysts, method for their preparation and their use in producing of isocyanate groups containing polyisocyanates
08/28/1991CN1054061A Hydrogenation with cu-al catalysts
08/28/1991CN1054060A Hydrogenation with cu-al-x catalysts
08/28/1991CN1013645B Conversion catalyst for synthetic gas and its preparation method
08/27/1991US5043520 Contacting with a molybdenum, tungsten and/or rhenium dispro-portionation catalyst on an inorganic oxide support and an acidic zeolite isomerization catalyst
08/27/1991US5043514 Ethylene dimerization and polymerization
08/27/1991US5043511 Catalyst of clay impregnated with two dissimilar metals and calcined
08/27/1991US5043485 Process for the hydrogenation of fatty acid methyl ester mixtures
08/27/1991US5043311 Ceramic or metallic support with active metal oxide; concentration gradient from core to edge
08/27/1991CA1288088C Treatment of catalyst particles
08/24/1991CA2034622A1 Trimerization catalysts, a process for their preparation and their use for the preparation of polyisocyanates containing isocyanurate groups
08/23/1991CA2034063A1 Catalyst composition containing segregated platinum and rhodium components
08/21/1991EP0442159A1 Concurrent isomerization and disproportionation of olefins
08/21/1991CN1053899A Catalyst for purification of exhaust gases of internal combustion engines
08/20/1991US5041408 Catalyst comprising calcium aluminate cement and at least one oxide of nickel or cobalt
08/20/1991US5041405 Lithium/magnesium oxide catalyst and method of making
08/20/1991US5041404 Method of presulfiding a hydrotreating, hydrocracking or tail gas treating catalyst
08/14/1991EP0441430A1 Catalytic dehydrogenation of C2-C5 paraffins
08/14/1991EP0441173A1 Catalyst for cleaning exhaust gases from combustion engines
08/14/1991DE4003939A1 Noble metal alumina catalyst contg. oxide promoter for gas purificn. - doped with base metal for cold start property and resistance to lean gas
08/14/1991CN1053808A Preparation method for rare earth y molecular sieve
08/13/1991US5039648 Process for the preparation of cobalt catalysts
08/13/1991US5039647 Catalyst for exhaust gas purification and method for producing the catalyst
08/13/1991US5039646 Supported oxidation catalyst containing platinum and/or palladium and iron and/or its oxide for conversion of carbon monoxide to carbon dioxide; lasers
08/13/1991US5039645 Preparing carbon monoxide oxidation catalyst
08/13/1991US5039643 Method for the production of catalytically active coatings for the production of hydrogen cyanide
08/08/1991CA2035798A1 Catalytic composition for the dehydrogenation of c2-c5 paraffins
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