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| Number | Title | Issue Date |
| 5439865 | Catalyst for exhaust gas purification and process for production thereof A catalyst for exhaust gas purification, comprising a heat-resistant inorganic monolith carrier and a catalyst layer loaded thereon, the catalyst layer including a catalyst composition containing at least one noble metal selected from Pt, Pd and Rh, as an... | 08/08/1995 |
| 5422329 | Supported catalyst, process for its preparation and its use for the preparation of vinyl acetate The invention relates to improved Pd/K/Au, Pd/K/Ba and Pd/K/Cd supported catalysts, their preparation and their use for the preparation of vinyl acetate from ethylene, acetic acid and oxygen in the gas phase. The stated catalysts are prepared by atomizing... | 06/06/1995 |
| 5422331 | Layered catalyst composition A catalyst composition contains a catalytic material having having an undercoat layer containing a mixture of a fine particulate undercoat refractory metal oxide and a sol such as a silica sol, the undercoat providing good adherence to substrates, such as... | 06/06/1995 |
| 5413984 | Method for preparing multi-metal catalysts A method for preparing multi-metal catalysts including an active phase consisting of at least two metals, A and B, which are selected from groups VIII and IB of the periodic table, and a porous support. According to the method: firstly, at least a part of... | 05/09/1995 |
| 5399324 | Two-stage catalyst system for lean burn engines The present invention broadly relates to a catalyst system for promoting oxidation-reduction reactions of the exhaust gases produced by an internal combustion engine wherein the catalyst comprises a two-stage system of a first-stage nitric oxide removal (... | 03/21/1995 |
| 5356851 | Catalyst containing a group VIII metal and a group IIIA metal deposited on a support The invention relates to a novel catalyst for the selective hydrogenation of unsaturated hydrocarbons. It is characterized in that the catalyst contains a group VIII metal deposited on a support previously modified by an element chosen from within group I... | 10/18/1994 |
| 5334570 | Pore impregnated catalyst device A porous catalyst support which may be used in a catalytic converter for treating automotive exhaust gases. The support comprises a substrate having a multichannel structure of generally thin walls and washcoat particles of colloidal particle size mainly ... | 08/02/1994 |
| 5288470 | Metal substrate having an insulating barrier A metal substrate contains a barrier which functions as an electrical insulator. One can thus use the substrate to make an electrically heated catalytic converter, in which one must electrically isolate a catalyst-bearing strip from adjacent strips. One f... | 02/22/1994 |
| 5275997 | Precious metal catalysts utilizing composites of oxygen-ion conducting and inert support materials Three-way precious metal catalysts useful for conversion treatment of pollutants in fuel combustion gases from automotive exhausts, or gas emissions from stationary fuel combustion sources, have chemical activity and thermal stability of the catalysts app... | 01/04/1994 |
| 5250489 | Catalyst structure having integral heat exchange This invention is a catalyst structure having integral heat exchange surfaces and a method for using the structure in highly exothermic processes, such as a combustion process, while maintaining the catalyst and the structure wall at a temperature below t... | 10/05/1993 |
| 5232890 | Precious metal catalysts with oxygen-ion conducting support Three-way catalysts used for treatment of automobile exhaust gas or gas emissions from stationary combustion sources, which typically have consisted of platinum and rhodium and sometimes palladium and rhodium dispersed on an γ-alumina support, can have t... | 08/03/1993 |
| 5208205 | Catalyst system for converting emissions of a lean-burn engine A catalyst system for attaining high conversions of NO, HC, and CO in a fuel-lean emission flow (i.e., containing SO2, H2 O, H2, and considerable excess oxygen), the system comprising: (a) a first stage reducing catalyst f... | 05/04/1993 |
| 5208203 | Diesel engine exhaust gas-purifying catalyst There is provided a Diesel engine exhaust gas-purifying catalyst which comprises (1) a catalytic component comprising titania having dispersed and deposited thereon at least one noble metal selected from palladium, platinum and rhodium, and (2) a refracto... | 05/04/1993 |
| 5200382 | Catalyst comprising thin shell of catalytically active material bonded onto an inert core A catalyst is disclosed comprising a thin outer shell of catalytic material bonded to an inner core of catalytically inert material. The catalyst is made by coating a catalytically inert core such as alpha alumina, with a thin layer of finely divided cata... | 04/06/1993 |
| 5185311 | Catalytic composite for purifying exhaust gases and a method for preparing the same For the preparation of a catalytic composite for purifying exhaust gases, first, at least one perov-skite-type compound oxide of the formula RMO3, where R is La or a combination of La and Ce, and M is Co, Mn or a combination thereof, is support... | 02/09/1993 |
| 5179060 | Dispersion enhanced PT group metal catalysts and method of making the catalysts A method of making a three-way catalyst based on platinum group metals, comprisng: (a) impregnating an alumina substrate with a platinum group metal ion by contacting such substrate with an aqueous solution containing the platinum group metal in an amount... | 01/12/1993 |
| 5141912 | Chrome/platinum/palladium catalyst for hydrocarbon emission control A catalyst for control of hydrocarbon emission with improved resistance to phosphorus, sulfur, halogen and silicon poisoning comprising a refractory oxide support impregnated with 0.5 to 20% by weight chromium oxide or manganese oxide or a mixture thereof... | 08/25/1992 |
| 5122496 | Catalyst for removing the nitrite and/or nitrate content in water A catalyst is disclosed made from a porous inorganic carrier material impregnated with a metal component selected from palladium, rhodium, mixtures of palladium and rhodium, and mixtures of palladium and a metal of the copper group, in which the carrier h... | 06/16/1992 |
| 5110779 | Polymer hydrogenation catalysts The hydrogenation of unsaturated polymers is effected employing a heterogeneous catalyst comprising a Group VIII metal and a porous support wherein the porous support is characterized by a pore size distribution such that at least 95% of the pore volume i... | 05/05/1992 |
| 5106802 | Catalyst for purification of exhaust gas from diesel engine A catalyst for the purification of the exhaust gas from a diesel engine, which catalyst comprises a honeycomb carrier possessing through holes disposed parallelly to the direction of flow of the exhaust gas and a catalyst component possessing a specific s... | 04/21/1992 |
| 5102853 | Three-way catalyst for automotive emission control A three-way catalyst for automotive emission control having a mechanical carrier having a support comprised substantially of alumina, a catalytic compound supported on said carrier having a major constituent of palladium, and a discontinuous phase of tita... | 04/07/1992 |
| 5075277 | Steam 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 |
| 5051392 | Multifunctional 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 |
| 5047381 | Laminated 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 |
| 5039647 | Catalyst 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 |
| 5023226 | Ruthenium 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 |
| 4980332 | Method 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 |
| 4952549 | Ruthenium 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 |
| 4940687 | Catalyst and process for hydrogenation of unsaturated hydrocarbons Dienes and/or acetylene impurities in an olefin feed; in particular a propylene feed, may be selectively hydrogenated in a single stage by use of a catalyst of palladium supported on alumina which is substantially crystalline alpha alumina, wherein the av... | 07/10/1990 |
| 4910180 | Catalyst 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 |
| 4904633 | Catalyst 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 |
| 4900712 | Catalytic 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 |
| 4891346 | Redispersal of Ru, Os, Rh and Pd catalysts and processes therewith Included is a process for redispersing catalysts wherein the catalyst metal is selected from the group consisting of ruthenium, osmium, rhodium and palladium comprising contacting the catalyst serially with (1) a reducing agent; (2) a halogen redispersing... | 01/02/1990 |
| 4857492 | Transition 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 |
| 4853358 | Method 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 |
| 4849399 | Catalyst 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 |
| 4839328 | Catalyst 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 |
| 4833114 | Process for preparing palladium catalyst for purifying waste gas A process for preparing a palladium catalyst for purifying a waste gas is disclosed. The process comprises dissolving dinitrodiammine palladium in a nitric acid solution in the temperature range of 60° to 100° C., aging the solution, applying the soluti... | 05/23/1989 |
| 4831009 | Method 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 |
| 4830844 | Oxidation 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 |
