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 21 - Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
Patents for B01J 21 - Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium (28,523)
11/1991
11/26/1991US5068361 Cyclization, deesterification, esterification over a fixed bed or fluidized bed oxidic catalyst
11/26/1991US5068216 Pillaring layered silicates with a mixture of swelling agent and pillar precursor
11/22/1991CA2042103A1 Process for co-oligomerizing 1,3-di-isopropenyl benzene and alpha-olefins to prepare synthetic lubricant base stocks having improved properties
11/21/1991EP0457059A1 Process for removal of nitrogen oxides producing HNO3
11/20/1991CN1056299A Process for obtaining at least one tertiary olefin by decomposition of corresponding ether
11/19/1991US5066629 Group 2A oxide or carbonate mixed with clay
11/15/1991CA2041876A1 Process for co-oligomerizing propylene and alpha-olefins to prepare synthetic lubricant base stocks having improved properties
11/14/1991DE4114924A1 Alumina support prodn. with active component by sol-gel method - and use esp. for regenerative absorption of sulphur di:oxide, oxygen or hydrogen sulphide
11/13/1991EP0456373A1 A catalyst system for metathesis reactions of olefines and a process for the metathesis of an olefine
11/13/1991EP0456049A1 Process for the preparation of vinylphosphonic acid derivatives
11/13/1991CN1056069A Process for preparation of alumina-based extrudates
11/13/1991CA2042464A1 Process for the removing of nitrogen from exhaust gases while obtaining hno3
11/12/1991US5064801 Process for manufacturing a carbon catalyst
11/12/1991US5064792 Catalyst for the reduction of nitrogen oxides, a method for its preparation and the use thereof
11/12/1991US5064525 Catalysis; hydrogenation
11/06/1991EP0455491A2 Catalysts and methods for denitrization
11/06/1991EP0455451A1 Thermal shock resistant ceramic honeycomb structures
11/06/1991EP0455307A1 Process for the preparation of alumina-based extrudates
11/06/1991EP0455306A2 Olefin ethylation process
11/06/1991EP0455004A1 Process for the preparation of dimethyl ether
11/05/1991US5063033 Process for the production of boehmite
11/05/1991CA1291743C Catalyst for removing nitrogen oxides in exhaust gases
11/05/1991CA1291742C Catalyst base
10/1991
10/31/1991WO1991016265A1 Process for the synthesis of high porosity, high specific surface metallic oxides, oxides obtained and catalysts containing same
10/31/1991CA2040338A1 Process for oligomerizing olefins using an aluminum nitrate-treated acidic clay
10/30/1991EP0454397A1 Process for preparing epsilon-caprolactone
10/30/1991EP0453818A1 Process for the reductive dehalogenation of halogenated hydrocarbons and halogenated ethers
10/30/1991EP0453674A1 Process for the preparation of surface impregnated dispersed cobalt metal catalysts and hydrocarbon synthesis using said catalysts
10/29/1991US5061474 Amorphous aluminum oxides, methods of production and uses
10/26/1991CA2040270A1 Process for preparing ¹-caprolactone
10/23/1991EP0452619A1 Pressed titanium dioxide, process for its manufacture and its use
10/23/1991EP0256065B1 Layered crystalline aluminosilicate and a method for its preparation
10/22/1991US5059725 One step synthesis of methyl t-butyl ether from t-butanol plus methanol using Group IV oxides treated with sulfates or sulfuric acid
10/22/1991US5059718 Oxo process for increasing yield of oxo alcohol
10/22/1991US5059568 Intercalated clay having large interlayer spacing
10/22/1991CA1291154C 2,2-dihalovinyl haloformates, process of preparation and applications thereof
10/22/1991CA1290924C Process for the preparation of spheroidal silica particles
10/17/1991DE4012007A1 Reductive de-hydrohalogenation of hydrocarbon(s) or ether(s)
10/16/1991EP0452182A1 Process for the preparation of at least one tertiary olefine by decomposition of the corresponding ether
10/16/1991EP0348388B1 Catalyst carrier body
10/16/1991CN1055359A Isomerization of epoxyalkenes dihydrofurans and catalysts compositions useful therefor
10/16/1991CN1055303A Catalytic composition for dehydro-genation of c2-c5 paraffins
10/16/1991CN1055302A Catalyst for purifying exhaust gas and method for production thereof
10/15/1991CA1290738C Attrition-resistant catalyst composition, method of making and use
10/15/1991CA1290737C Vanadium passivating agent for use in a conversion catalyst and methodof making same
10/12/1991WO1991015292A1 Active composite and its use as reaction medium
10/10/1991CA2040084A1 Process for preparing at least one tertiary olefin by decomposition of the related ether
10/09/1991CN1014233B Oligomerization of olefins
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
10/08/1991US5055443 Attrition resistant agglomerates of active alumina
10/03/1991WO1991015441A1 Use of hydrophobised hydrotalcites as catalysts for ethoxylation or propoxylation
10/03/1991CA2079806A1 Use of hydrophobised hydrotalcites as catalysts for ethoxylation or propoxylation
10/02/1991EP0449546A1 Process for the preparation of m-aminophenols from resorcinol
10/02/1991EP0449453A2 Process for oligomerizing olefins to prepare base stocks for synthetic lubricants
10/02/1991EP0449089A1 Process for preparing 3-aminomethyl-3,5,5-trimethyl-cyclohexylamine
10/02/1991EP0448585A1 Process for the production of a catalyst for the removal of oxides of nitrogen from exhaust gases.
10/02/1991EP0448584A1 Process and catalyst for dehydration or dehydrocyclization of hydrocarbons.
10/02/1991CN1054914A Fluidized catalyst for acrylonitrile
10/01/1991US5053574 Hydrodealkylation of alkylaromatic compounds
10/01/1991US5053569 Process for oligomerizing olefins to prepare base stocks for synthetic lubricants
10/01/1991US5053379 High-activity nickel catalyst and process for preparation thereof
09/1991
09/29/1991CA2039227A1 Process for oligomerizing olefins to prepare base stocks for synthetic lubricants
09/26/1991DE4009505A1 Verfahren zur herstellung verzweigter fettsaeuren und deren ester A process for producing branched fatty acids and esters
09/25/1991EP0448157A1 A two-step monoethylene glycol preparation process
09/24/1991US5051391 Catalyst filter and method for manufacturing a catalyst filter for treating a combustion exhaust gas
09/24/1991US5051389 Catalyst composition prepared by vapor depositing onto a carbon support
09/24/1991US5051386 Silica-alumina catalyst containing phosphorus
09/24/1991US5051385 Monodispersed mesoporous catalyst matrices and FCC catalysts thereof
09/24/1991CA1289574C Process for the preparation of alkylaniline using an aluminosilicate catalyst
09/19/1991WO1991013918A1 Method for producing polymerized alcohols
09/19/1991WO1991013831A1 Magnesium aluminate with controlled surface area
09/18/1991EP0447059A2 Alkylation of silanes
09/18/1991EP0446759A1 Process for the production of cyclopentenones
09/18/1991EP0446661A1 Process for producing alkylthio- and arylthio-substituted carboxylic acids and their thioesters
09/18/1991EP0446481A1 Reduced and stabilized hydrogenation catalyst
09/18/1991EP0310608B1 Process for producing an active carbon catalyst
09/17/1991US5049536 Catalytically active silica and alumina gel and process for preparing it
09/17/1991CA2038392A1 Process for producing alkylthio- and arylthio-substituted carboxylic acids and their thioesters
09/16/1991CA2038193A1 Two-step monoethylene glycol preparation process
09/11/1991EP0445163A1 High surface area cordierite catalyst support structures
09/11/1991EP0422013A4 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
09/11/1991EP0419581A4 Method for intercalating organic-swelled layered metal chalcogenide with a polymeric chalcogenide by plural treatments with polymeric chalcogenide precursor
09/10/1991US5047381 Laminated substrate for catalytic combustor reactor bed
09/10/1991US5047178 Nickel/alumina catalyst, its preparation and use
09/10/1991CA1288779C Process for preparing a s-substituted phosphorochloridothiolate
09/10/1991CA1288575C .alpha.-ALUMINA IN THE FORM OF SPHERICAL, NON AGGREGATED PARTICLES HAVING A NARROW SIZE DISTRIBUTION AND SIZES BELOW 2 MICRONS, AND PROCESS FOR PREPARING THE SAME
09/09/1991WO1991013882A1 Isomerization of epoxyalkenes to 2,5-dihydrofurans and catalysts compositions useful therefor
09/09/1991CA2276192A1 Isomerization of epoxyalkenes to 2,5-dihydrofurans and catalysts compositions useful therefor
09/03/1991US5045519 Process for the preparation of a catalyst carrier based on aluminosilicates
09/03/1991US5045516 Pure Titanium Oxide, Molybdenum trioxide
09/03/1991US5045301 Moldable/extrudable titanium dioxide particulates
09/03/1991CA1288439C Method of synthesizing esters
08/1991
08/28/1991EP0443391A1 Method for obtaining tetrahydrofuran from mixtures containing tetrahydrofuran, 1,4-butanediol, gamma-butyrolactone and succinic acid esters
08/28/1991EP0443167A1 Trimerization-catalysts, method for their preparation and their use in producing of isocyanate groups containing polyisocyanates
08/28/1991CN1054015A Catalysts for treatment of gaseous efflux and process for treatment of gaseous efflux
08/27/1991US5043523 Al2 O3 alkene isomerization process and catalyst
08/27/1991US5043519 Process for the production of tertiary olefins by decomposition of alkyl-tert.-alkyl-ethers
08/27/1991US5043518 Process for regenerating a catalyst and resultant regenerated catalyst and production of olefins by catalytic ether decomposition using regenerated catalyst
08/27/1991US5043514 Ethylene dimerization and polymerization
08/27/1991US5043511 Catalyst of clay impregnated with two dissimilar metals and calcined
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