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7576028 |
Catalyst body
A catalyst body comprising a carrier and a catalyst layer containing an alkali metal and/or an alkaline earth metal, loaded on the carrier, which catalyst further contains a substance capable of...
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7534842 |
Catalysts for olefin polymerization
This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a...
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7524912 |
Preparation of linear ethylene-acrylate copolymers with palladium catalysts and free radical scavengers
A polymerizable composition including a late transition metal complex, a non-polar olefin, a polar olefin, and a free radical scavenger, wherein the polymerizable composition is capable of forming...
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7473665 |
Exhaust gas-purifying catalyst system
An exhaust gas-purifying catalyst system is provided with a plurality of catalyst layers including a first and a second catalyst layers, supported on a support structure. The first catalyst layer...
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7465816 |
Production of tetrahydrofuran from 1,4-butanediol
Provided is a method for the production of tetrahydrofuran (THF) from 1,4-butanediol (BDO) using a zirconium sulfate (Zr(SO 4 ) 2 .nH 2 O) catalyst. The method of the present invention can achieve...
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7431910 |
Process for preparing zirconium-cerium-based mixed oxides
A process for preparing zirconium-cerium-based mixed oxides which comprises reacting an alkali with an aqueous solution of a zirconium salt containing 0.42-0.7 mole of sulphate anion (SO 4 2− )...
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7431904 |
Catalyst support material, catalysts prepared therefrom and process for the treatment of a flue gas
The present invention relates to a catalyst support material and catalysts made therefrom having improved resistance towards erosion. The catalyst support contains at least 20% by weight of TiO 2 ...
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7396945 |
Method of preparing tetrahydrofuran
The present invention relates to a process for preparing tetrahydrofuran from 1,4-butandiol. According to the process in the present invention, a metal sulfate catalyst selected from the group...
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7396518 |
High-temperature denitration catalysts and processes for preparing same
The present invention provides a method of high-temperature denitration characterized in that NOx in an exhaust gas is reduced at 450° to 800° C. using ammonia as a reducing agent in the presence...
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7393809 |
Catalyst for purification of diesel engine exhaust gas
This invention provides a new catalyst for purification of diesel engine exhaust gas comprising a carrier of at least one sulfur-resistant refractory oxide and at least one catalytic metal, wherein...
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7307113 |
Fluorosulfonic acid organic polymers
The present invention provides for a composition and a process for forming the composition. The composition comprises an organic polymer and 0.5-40% by weight of the composition of a siloxane, the...
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7304199 |
Solid acid catalyst and method of using same
A catalyst composition includes an oxygen compound of an element selected from Group IVB or Group IVA of the Periodic Table of the Elements; an oxygen compound of an element selected from Group VIB...
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7291577 |
Hydrometallurgical process for production of supported catalysts
A process for the production of a supported catalyst. The process comprises heating a slurry that comprises a catalyst support and at least one active catalytic ingredient precursor. Gas is...
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7288499 |
Regenerable high capacity sorbent for removal of mercury from flue gas
A regenerable, high-capacity sorbent for removal of mercury from flue gas and processes and systems for making and using the sorbent. A phyllosilicate substrate, for example vermiculite or...
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7259285 |
Oligomerization catalyst, a method for production and the use thereof
An oligomerization catalyst for olefins having from 2 to 6 carbon atoms is produced by treating aluminum oxide with a nickel compound and a sulfur compound, either simultaneously or firstly with...
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7214642 |
Methods of preparing active chromium/alumina catalysts via treatment with sulfate
Methods of preparing a polymerization catalyst are provided that include contacting a support comprising alumina with a sulfating agent and with chromium. In an embodiment in which the chromium is...
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7153810 |
Silver doped catalysts for treatment of exhaust
A method of making an exhaust treatment catalyst includes dispersing a metal-based material in a first solvent to form a first slurry and allowing polymerization of the first slurry to occur....
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7125536 |
Nano-structured particles with high thermal stability
This invention relates to a composition comprising nano-structured metal oxide particles (particularly, zirconia) and at least one stabilizing agent, a method to produce the composition, and a...
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7026268 |
Solid acid catalyst containing platinum group metal component and method for preparation thereof
The present invention provides a concentration distribution for a platinum group metal component in a catalyst with which catalyst activity can be increased, and to provide a method for supporting...
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7015175 |
High-activity isomerization catalyst and process
A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated...
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6916761 |
Polymer-supported Lewis acid catalyst
In order to provide a novel Lewis acid catalyst, which shows high reaction activity in aqueous medium, is easily recovered, and is excellent in reusability, a Lewis acid group expressed by the...
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6858562 |
Catalyst for decomposing organic harmful substances and method for decomposing organic halides by use thereof
A catalyst of a water insoluble vanadyl sulfate or a complex catalyst, in which a specific oxide and a specific sulfate are combined to the water insoluble vanadyl sulfate are excellent not only in...
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6858560 |
Ethylene oxide catalyst
An ethylene oxide catalyst is provided which is essentially transition metal and rhenium free and which consists essentially of silver, alkali metal, sulfur and boron components on a support such...
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6737380 |
Solid acid catalyst, production method thereof, and method for hydrodesulfurizing and isomerizing light hydrocarbon oil using the same
A process for producing a solid acid catalyst, which comprises: adding a pseudoboehmite as a binder to a sulfated zirconium hydroxide, followed by kneading with an aqueous solution containing at...
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6673739 |
Catalyst for CO shift reaction
A practical catalyst exhibiting especially high CO shift reaction activity in a low temperature region where CO is favorably converted to H 2 in equilibrium includes a carrier which is composed of...
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6673326 |
Catalytic processes for the reduction of perfluorinated compounds and hydrofluorocarbons
A process for reducing perfluorinated compounds and/or hydrofluorocarbon compounds in a sample uses a catalyst made from aluminum oxide (Al 2 O 3 ), and one or more enhancers selected from the...
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6562752 |
Metallic sulphide catalysts, processes for synthesising said catalysts and use thereof
A catalyst containing a sulfide phase comprising (a) sulfur (b) and at least one element A selected form group IIIB, including the lanthanides and actinides, group IVB and group VB, and optionally...
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6562749 |
Process for the preparation of a catalyst or catalyst precursor
A process for the preparation of a ceramic foam supporting one or more catalytically active components or precursors thereof, which component is active in a form other than an inorganic oxide, the...
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6495733 |
Superacid catalyst for the hydroisomerization of n-paraffins
A superacid catalyst comprising: zirconium oxide on whose surface sulfate groups are present, in a quality corresponding to total coverage of the surface of the zirconium oxide by means of a...
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6492296 |
Two-step process for sulfiding a catalyst containing an S-containing additive
The present invention pertains to a process for sulfiding a catalyst composition comprising at least one hydrogenation metal component of Group VI and/or Group VIII of the Periodic Table, and an...
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6448198 |
Acid catalyst with a sulfated zirconia base and its uses
The invention relates to an acid catalyst containing a substantial quantity of supported or mass sulfated zirconia and at least one hydrogenating transition metal. This catalyst is characterized by...
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6432867 |
Process for sulfurizing catalysts in a reducing medium
Sulfided catalysts produced by sulfurizing supported catalysts containing at least one element selected from group IIIB, including the lanthanides and actinides, group IVB and group VB, wherein the...
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6417134 |
Ex-situ presulfuration in the presence of hydrocarbon molecule
The invention relates to a process for the ex-situ presulfuration of a catalyst for the hydroconversion of hydrocarbons in the presence of hydrogen and of at least one sulfurated compound. It is...
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6380448 |
Method for recovering styrene monomer from polystyrene resin by using a catalyst
The present invention relates to a method for recovering styrene monomers from polystyrene resins by using sulfate as a catalyst. The present invention makes possible to thermally decompose...
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6326328 |
Solid acid catalyst and process for preparing the same
The present invention relates to a shaped solid acid catalyst for the isomerization of hydrocarbons and so on, which has a high activity and is excellent in strength and easily handleable, and...
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6316382 |
Process for sulphurizing catalysts by reduction followed by sulphurization
The invention concerns a process for sulphurizing supported catalysts containing at least one element selected from group IIIB, including the lanthanides and actinides, group IVB, group VB and...
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6288006 |
Method for pre-sulphurization of catalysts
For the presulphurization of catalysts based on metal oxides, intended especially for the hydrotreating of hydrocarbon feedstocks, at least one tertiary mercaptan (for example tert-dodecyl...
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6261989 |
Catalytic converter for cleaning exhaust gas
A catalytic converter for cleaning exhaust gas includes a heat-resistant support, and a catalytic coating formed on the heat-resistant support. The catalytic coating contains Pd-carrying particles...
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6242378 |
Process for sulphurizing catalysts in the presence of carbon and elemental sulphur
The invention concerns a process for sulphurising supported catalysts containing at least one element selected from group IIIB, including the lanthanides and actinides, group IVB and group VB, said...
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6214307 |
Exhaust gas purifying catalyst and exhaust gas purifying method
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6180556 |
Solid superacid catalysts for the isomerization of hydrocarbons and sol-gel process for their production
Solid superacid catalysts, in the form of spheres or microspheres, consisting of a mixed sulfated oxide of zirconium and of at least one other element selected from those of group 3, group 4, group...
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6177596 |
Highly acidic microporous synergistic solid catalyst and its applications
An active highly acidic microporous solid catalyst comprising sulphated metal oxide and at least one of carbon molecular sieve and/or heteropoly acid and having pore volume in the range of 0.1-0.2...
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6150299 |
Cerium- and zirconium-based mixed oxide, method of producing same and catalyst material for exhaust gas purification
Mixed oxides excellent in thermal stability of specific surface area and in oxidation-reduction performance are provided on an industrial scale. Catalyst materials useful in exhaust gas...
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6139723 |
Iron-based ionic liquid catalysts for hydroprocessing carbonaceous feeds
A highly dispersed iron-based ionic liquid or liquid-gel catalyst which may be anion-modified and metals-promoted has high catalytic activity, and is useful for hydrocracking/hydrogenation...
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6127309 |
Catalyst for use in the alkylation of isoalkanes
A catalyst useful for the alkylation of isoalkanes is disclosed along with a process therefor the same. The catalyst comprises a zirconium halide and at least one member of the group consisting of...
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6110860 |
Catalyst for purifying exhaust gas, process for production thereof, exhaust gas purifying filter, and exhaust gas purifying apparatus
A catalyst for exhaust gas purification characterized by high catalytic activity, heat resistance, and toxin resistance includes a metal oxide and at least one alkali metal sulfate or at least one...
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6054408 |
Catalyst for reducing the nitrogen oxide concentration in a flowing medium and method for producing the catalyst
An SCR catalyst containing titanium, molybdenum and vanadium has the particular characteristic that its catalytic activity is significantly less than that of a tungsten-containing catalyst. That...
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6037303 |
Superacid catalyst for the hydroisomerization of n-paraffins and process for its preparation
A superacid catalyst comprising zirconium oxide having a purely tetragonal crystalline phase structure and whose surface has sulfate groups thereon in a quantity corresponding to the total coverage...
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6024933 |
Direct oxidation method for converting sulphur compounds into sulphur with a copper catalyst
The invention relates to a process for the direct oxidation of sulphur compounds into elemental sulphur and/or into sulphates at a temperature below 200° C., in which a supported catalyst whose...
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5958822 |
Modified fluorosulfonic acids
This invention concerns modified fluorosulfonic acid compounds possessing a sulfonic acid fluoride, chloride or ester group or a sulfonic acid or a salt of a sulfonic acid group at one end and...
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