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Class 502/334 - Of platinum


Subclass of Class 502 - Catalyst, solid sorbent, or support therefor: product or process of making
Definition: Composition in which the additional metal is element number
No. of patents: 487
Last issue date: 05/01/2012


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NumberTitleIssue Date
5081092Oxidation catalyst with modified platinum structure
Sacrificial use of amino polymers to modify the crystal structure of platinum derived from chlorine compounds in a method to oxidize hydrocarbons, comprising: (a) preparing a polymer modifier by controllably reacting amine with epoxy resin to form a solub...
01/14/1992
5075277Steam reforming catalyst for hydrocarbon and method for manufacturing the same
In the steam reforming catalyst for hydrocarbon according to the present invention, catalyst metal is supported on or in the surface layer of a zirconia carrier containing yttria and having a crystal structure primarily consisting of tetragonal system or ...
12/24/1991
5051392Multifunctional catalyst for treating exhaust fumes from internal combustion engines, containing uranium, at least one uranium promotor and at least one precious metal, and its preparation
A multifunctional catalyst, a method of preparing the catalyst and the use of the catalyst in treating exhaust fumes from internal combustion engines are described. The catalyst includes a porous layer containing (weight %, dry): about 50 to about 99.7% o...
09/24/1991
5047381Laminated substrate for catalytic combustor reactor bed
A laminated oxidation resistant catalyst element includes a metal alloy substrate such as a steel foil coated with a noble metal such as platinum. A ceramic washcoat such as alumina is applied over the noble metal and a catalyst is applied with the washco...
09/10/1991
5039647Catalyst for exhaust gas purification and method for producing the catalyst
There is provided an improved catalyst for purifying exhaust gases comprising a carrier carrying alumina, zirconium oxide and a noble metal catalyst. The improvement resides in the fact that the carrier carries the alumina as a layer having dispersed ther...
08/13/1991
5023226Ruthenium supported catalyst, its preparation and its use in the preparation of substituted or unsubstituted cyclohexylamine and substituted or unsubstituted dicyclohexylamine
Substituted or unsubstituted cyclohexylamine and substituted or unsubstituted dicyclohexylamine can be produced by catalytic hydrogenation of substituted or unsubstituted aniline by using a ruthenium catalyst which in addition to ruthenium also contains p...
06/11/1991
5010051Staged three-way conversion catalyst and method of using the same
A catalyst composition has an upstream stage and a downstream stage, the upstream stage containing a catalytic material which is different from the catalytic material contained on the downstream stage and is characterized by having a low ignition temperat...
04/23/1991
5008234Process for the preparation of catalytic metal clusters
Compositions of matter useful as catalysts in heterogeneous reactions and comprising metal atom clusters supported on inorganic supports such as silica, alumina or zeolites are prepared by vaporizing the metal at low temperatures and pressures into an env...
04/16/1991
4992252Method for production of hydroxylammonium salt
A process for producing hydroxylammonium salts of hydrogenating nitrogen monoxide in an acidic medium in the presence of a catalyst which is prepared by subjecting a platinum compound to a first reductive treatment with a thiosulfate or a thiosulfate comb...
02/12/1991
4980332Method of making inorganically crosslinked layered compounds
The instant invention relates to a method for converting phosphorus containing polymers from a two dimensional, layered structure into a three dimensional structure by crosslinking such layers. The method and the resulting crosslinked polymers may be used...
12/25/1990
4977128Catalyst for combustion and process for producing same
A high performance catalyst for combustion is provided which includes a heat-resistant carrier capable of retaining a high specific surface area even when it is used at a high temperature of 1,000° C. or higher for a long time, and processes for producin...
12/11/1990
4975406Catalyst for purifying exhaust gases and preparation thereof
The invention concerns a catalyst for oxidation of hydrocarbons and carbon monoxide and/or reduction of nitrogen oxides. The catalyst consists of a carrier body and on this a catalytical coating, which consists of a washcoat layer containing a support mat...
12/04/1990
4952549Ruthenium catalyst, process for its preparation and process for the preparation of a mixture of cyclohexylamine and dicyclohexylamine using the ruthenium catalyst
Substituted or unsubstituted cyclohexylamine and substituted or substituted dicyclohexylamine can be produced by catalytic hydrogenation of substituted or unsubstituted aniline, for which a catalyst is used containing ruthenium and palladium which are att...
08/28/1990
4919786Process for the hydroisomerization of was to produce middle distillate products (OP-3403)
A process for selectively producing middle distillate fuel products from paraffin waxes such as slack wax and Fischer-Tropsch wax by hydroisomerizing the wax to convert 60-95 weight percent per pass of the 700° F.+ fraction contained in said w...
04/24/1990
4910180Catalyst and process for its preparation
A process for the preparation of catalysts, in particular for the purification of exhaust gases from internal combustion engines, is described, which makes it possible to use supports stable up to at least 1,200° C. which are free of gamma-aluminium oxid...
03/20/1990
4904633Catalyst for purifying exhaust gas and method for production thereof
A catalyst for purifying exhaust gas comprises a honeycomb carrier of monolithic structure and a coating layer deposited on the honeycomb carrier and formed with a catalyst composition containing a refractory inorganic oxide in the form of particles posse...
02/27/1990
4900712Catalytic washcoat and method of preparation of the same
The invention is concerned with a method of adsorbing uniformly onto preformed high surface area crystalline alumina one or more catalytically active non-noble (doping) oxide(s) and preferably alumina-stablilizing non-noble doping oxide(s), both from subs...
02/13/1990
4888320Catalyst and method of making the catalyst
A method of making a catalyst for cleaning exhaust gas from an engine including steps of preparing corrugated metallic panels and plane metallic panels, laminating the plane metallic panels with the corrugated metallic panels alternatively side by side to...
12/19/1989
4857492Transition metal organosols stabilized by organometallic polymers
A polymer stabilized colloidal transition metal solution wherein the monomer unit of the polymer has the chemical formula Rx MO, where M is a metal, R is an alkyl group, and x is two less than the valence of M....
08/15/1989
4853358Method of making inorganically crosslinked layered compounds
The instant invention relates to a method for converting phosphorus containing polymers from a two dimensional, layered structure into a three dimensional structure by crosslinking such layers. The method and the resulting crosslinked polymers may be used...
08/01/1989
4849399Catalyst for the reduction of the ignition temperature of diesel soot
This invention relates to a catalytic composite and a process for reducing the ignition temperature of diesel soot. The process comprises contacting an exhaust gas from a diesel engine, which exhaust contains diesel soot, with a catalytic composite. The c...
07/18/1989
4839328Catalyst material and a process for its preparation
A catalyst material having a catalyst metal supported on a substrate, wherein the substrate has at least two types of surface atomic sites at which the catalyst metal can reside, and the catalyst metal resides primarily in one of those types of sites. In ...
06/13/1989
4831009Method of applying a catalyst to a support
There is provided a washcoat for applying a catalyst coating to a catalyst support. The washout includes alumina and a catalyst metal from the platinum group. Thus, the alumina and the catalyst metal are applied to the support in a single coating. The inv...
05/16/1989
4830844Oxidation of carbon monoxide and catalyst composition therefor
A composition of matter comprising monolith support material, SnO2, Pt and/or Pd and at least one Cr compound is prepared by a process comprising the steps of coating a monolith material with colloidal SnO2, drying, impregnation with...
05/16/1989
4774217Catalytic structure for cleaning exhaust gas
A catalytic structure for cleaning exhaust gas from automobiles, etc., is provided. The catalytic structure comprises a ceramic carrier having a three-dimensional network skeleton forming the intercommunicating voids therein and a catalyst-carried activat...
09/27/1988
4769356Catalyst for purifying exhaust gas
Catalysts of reduced cost, for purifying exhaust gases, having smaller thermal expansion coefficients than conventional catalysts, good mechanical strength and large specific surface area are provided at low temperatures. The composition composed of at le...
09/06/1988
4757045Catalysts with support coatings having increased macroporosity and method for producing the catalysts
A catalyst composition comprises a carrier having a refractory metal oxide support coating thereon and a catalytic platinum group metal dispersed on the support coating. A major portion of the support coating is comprised of a conventional, first metal ox...
07/12/1988
4748145Catalysts having alkoxide-modified supports and method of increasing the catalytic activity of a catalytic metal
A catalyst composition comprising a catalytic metal and a support, the support being prepared by depositing a metal alkoxide on a core support, then calcining the support....
05/31/1988
4727052Catalyst compositions and methods of making the same
A method of making a catalyst composition comprising an activated alumina coating stabilized against thermal degradation includes applying a coating of alumina having one or more platinum group metal catalytic components dispersed thereon onto a carrier s...
02/23/1988
4719196Process for making a carrier-supported catalyst
A carrier-supported catalyst is prepared by applying a noble metal on to a ceramic honeycomb structure coated with an aluminum oxide layer. To this end, the ceramic honeycomb structure is impregnated with an aqueous solution containing nitrilotriacetic ac...
01/12/1988
4714693Method of making a catalyst composition comprising uniform size metal components on carrier
A reverse micelle impregnant solution comprising a hydrocarbon solvent, a surfactant having both polar and nonpolar characteristics and a metal ion containing water core wherein the concentration of said metal ion in said water core is greater than 0.1 mo...
12/22/1987
4714694Aluminum-stabilized ceria catalyst compositions, and methods of making the same
A catalyst material comprises an aluminum-stabilized ceria which optionally may be combined with an activated alumina and may also comprise one or more platinum group metal catalytic components. A method of making the material includes impregnating bulk c...
12/22/1987
4713363High surface area supported noble metal catalysts and process for their preparation
Novel supported noble metal catalysts have high metal loadings and dispersions and are particularly effective catalysts in the conversion of 2-chloropropene to methyl methacrylate by vapor phase reaction with methanol and carbon monoxide....
12/15/1987
4661468Catalyst for treatment and cleaning of exhaust fumes
A catalyst for cleaning exhaust fumes is disclosed, comprised of a catalyst ingredient of a base metal hyperfine powder of iron, nickel, or the like produced by the vaporization in gas, or their mixture, and a ceramic catalyst carrier of γ (gamma) - alum...
04/28/1987
4650782Lead-tolerant catalyst for treating exhaust gas in the presence of SO2
A lead-tolerant exhaust gas oxidation catalytic composite for oxidizing gas in the presence of SO2 comprising a refractory inorganic oxide support material having deposited thereon a noble metal component and having dispersed thereon a protecti...
03/17/1987
4642302Catalysts having alkoxide-modified supports and method of increasing the catalytic activity of a catalytic metal
A catalyst composition comprising a catalytic metal and a support, the support being prepared by depositing a metal alkoxide on a core support, then calcining the support....
02/10/1987
4621071Composite catalyst for treatment of vehicular exhaust gases and process for the preparation of the catalyst
A composite active phase/support catalyst adapted for the treatment of internal combustion engine exhaust gases, the active phase of which comprising at least one metal from a first group comprising platinum, palladium, iridium, rhodium, ruthenium, rheniu...
11/04/1986
4602000Process for manufacturing a catalyst on an alumina support and the catalyst produced by the process
The invention concerns a process for manufacturing a catalyst containing a carrier formed in major part of alumina and an active phase, the alumina carrier being obtained by admixing an alumina binding agent with a charge of alumina base. The process is c...
07/22/1986
4572904Lead-tolerant catalyst system for treating exhaust gas containing lead compounds
A lead-resistant exhaust gas oxidation catalytic composite is disclosed. The composite comprises a support material comprising a refractory inorganic oxide having deposited thereon a catalytic component selected from the Group consisting of platinum, pall...
02/25/1986
4555500Catalyst for hydrofining process for hydrocarbon-containing feed streams
A hydrocarbon-containing feedstream, which also contains metals, sulfur, nitrogen and/or Ramsbottom carbon residue, is contacted in a hydrofining process with a catalyst composition consisting essentially of an alumina support, platinum, and a promoter se...
11/26/1985
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