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| Number | Title | Issue Date |
| 6579824 | Catalyst based on palladium, gold, alkali, and lanthanoid, and a method for producing vinyl acetate The invention relates to a catalyst which contains palladium and/or compounds thereof, gold and/or compounds thereof, alkali metal compounds and at least one lanthanoid metal and/or compounds thereof. The invention also relates to the utilization of the c... | 06/17/2003 |
| 6576207 | Oxygen storing material with high thermal stability and a process for preparation and use thereof An oxygen storing material with high thermal stability is disclosed which contains cerium oxide and at least one stabilizer from the group praseodymium oxide, lanthanum oxide, yttrium oxide and neodymium oxide, wherein the stabilizer(s) and optionally cer... | 06/10/2003 |
| 6576200 | Catalytic converter for automotive pollution control, and oxygen-storing complex oxide used therefor A catalytic converter for cleaning exhaust gas includes a heat-resistant support, and a coating formed on the support. The coating contains at least one kind of catalytically active substance and at least one kind of oxygen-storing oxide. The oxygen-stori... | 06/10/2003 |
| 6569392 | Three-way rare earth oxide catalyst The invention is a method of manufacturing a three-way catalyst and the catalyst as well as its use for treating exhaust gas generated by a gasoline internal combustion engine. The catalyst composition comprises a mixture of particles of three different m... | 05/27/2003 |
| 6562315 | Suppression of methanation activity by a water gas shift reaction catalyst The invention provides a process for carrying out the water gas shift reaction comprising employing a methane production suppressing water gas shift reaction catalyst, wherein the methane production suppressing water gas shift reaction catalyst comprises ... | 05/13/2003 |
| 6551959 | Catalytic monolith substrate made of ceria and titania A process and a metal catalyst are provided for the partial oxidation of hydrocarbons to produce hydrogen and carbon monoxide. The process is conducted by contacting a mixture of a hydrocarbon-containing gas and an oxygen-containing gas in the presence of... | 04/22/2003 |
| 6551958 | Catalyst for dehydrogenating ethyl benzene to produce styrene A process for the preparation of a catalyst comprising iron oxide, potassium oxide, a magnesium compound and a cerium compound, wherein the catalyst has one or more Fe/K phases K2 O.Fe2 O3 1:n, where n is a natural number ... | 04/22/2003 |
| 6548446 | Catalyst for selective oxidation of carbon monoxide A selective catalytic material is used in a method for selective oxidation of carbon monoxide in the presence of hydrocarbons and contains rhodium and a bismuth component either as a supported catalytic material dispersed on a refractory inorganic oxide s... | 04/15/2003 |
| 6540968 | Low-precious metal/high-rare earth oxide catalysts The invention is a three-way catalyst, its method of manufacture, and use for treating exhaust gas generated by a gasoline internal combustion engine. The method comprises coating a substrate with mixed metal oxide particles in an amount of 10-30 wt. % ba... | 04/01/2003 |
| 6531425 | Catalytic converter comprising perovskite-type metal oxide catalyst Perovskite-type catalyst consists essentially of a metal oxide composition is provided. The metal oxide composition is represented by the general formula Aa-x Bx MOb, in which A is a mixture of elements originally in the f... | 03/11/2003 |
| 6528451 | Catalyst support material having high oxygen storage capacity and method of preparation thereof Mixed oxides of cerium oxide and zirconium oxides having a high oxygen storage and high oxygen release rate are disclosed. The mixed oxides are made of polycrystalline particles of cerium oxide and zirconium oxide having a controlled domain structure on t... | 03/04/2003 |
| 6528029 | Catalyst compositions employing sol gel particles and methods of using the same Composite of at least two metal oxides in the form of Primary Particles and a support having a particle size greater than the Primary Particles used in the formation of a catalyst composition for the treatment of a pollutant containing gas.... | 03/04/2003 |
| 6524992 | Single layer high performance catalyst A single layer high performance catalyst containing on an inert carrier body a catalytic coating comprising platinum, rhodium and various oxide materials. The catalyst contains a catalytic coating having at least one first support material selected from t... | 02/25/2003 |
| 6518216 | Catalyst useful for oxidation of alkanes A catalyst useful for the gas phase oxidation of alkanes to unsaturated aldehydes or carboxylic acids is disclosed. Processes for preparing the catalyst and using the catalyst to convert alkanes to unsaturated aldehydes or carboxylic acids are also disclo... | 02/11/2003 |
| 6514901 | Process for preparing a catalyst A process for preparing a catalyst is disclosed. The catalyst is useful for the gas phase oxidation of alkanes to unsaturated aldehydes or carboxylic acids.... | 02/04/2003 |
| 6514903 | Process for preparing a catalyst An improved catalyst including a compound of the formula (I) Aa Mm Nn Xx Oo (I) wherein 0.25 | 02/04/2003 |
| 6511642 | Porous material, catalyst, method of producing the porous material and method for purifying exhaust gas Disclosed are a porous material comprising particles without substantial fibrous structure and having pores, the pores having a mean pore diameter in a meso-pore region, sharp pore size distribution, and at least a part of the pores being connected three-... | 01/28/2003 |
| 6506705 | Composition based on cerium oxide or on cerium and zirconium oxides, in the extruded form, process for the preparation thereof and use thereof as catalyst The present invention relates to a composition based on cerium oxide or on cerium and zirconium oxides, in the extruded form, to a process for the preparation thereof and to the use thereof as catalyst. The process for the preparation of the composition o... | 01/14/2003 |
| 6506356 | Catalyst for oxidizing hydrogen sulfide gas and method for recovering elemental sulfur using the same A catalyst for recovering elemental sulfur by the selective oxidation of hydrogen sulfide is represented by the following chemical formula: Va Tib Xc Of wherein, a is such a mole number that vanadium amounts to 5-40% by w... | 01/14/2003 |
| 6499294 | Exhaust gas purification device for an internal combustion engine A converter containing a NOx absorbing and reducing catalyst is disposed in the exhaust passage of an internal combustion engine. The upstream half portion (portion of the inlet side) of the substrate of the NOx absorbing and reducing catalyst in the conv... | 12/31/2002 |
| 6497848 | Catalytic trap with potassium component and method of using the same A catalytic trap (10, 110) effective for conversion of NOx in an exhaust gas stream is inert to high-temperature reaction with basic oxygenated compounds of lithium, sodium or potassium. The catalytic trap may be substantially free of silica co... | 12/24/2002 |
| 6492299 | Process for the production of vinyl acetate A process for the production of vinyl acetate which comprises contacting ethylene, acetic acid and an oxygen-containing gas with a supported palladium catalyst prepared by a process comprising the steps of (a) impregnating a catalyst support with a pallad... | 12/10/2002 |
| 6492297 | Catalyst composition for purifying exhaust gas The present invention relates to a composite of cerium, zirconium and samarium components, a catalyst composition containing such composite and the use of the catalyst composition for the treatment of a gas stream to reduce contaminants contained therein.... | 12/10/2002 |
| 6489264 | Ammonia oxidation catalyst A catalyst for oxidation of ammonia is of the general formula (Ax By O3z)k (MEm On)f, wherein: A is a cation of Ca, Sr, Ba, Mg, Be, La or mixtures thereof, B is cations of Mn, Fe, Ni,... | 12/03/2002 |
| 6482766 | Process for catalyst preparation The invention concerns the preparation of a catalyst comprising a support comprising at least one oxide of the element Si, Al, Ti, Zr, Sn, Zn, Mg or Ln (where Ln is a rare earth), cobalt, titanium, at least one element A selected from the group formed by ... | 11/19/2002 |
| 6479691 | Catalyst for producing unsaturated nitrile A catalyst composition represented by the following empirical formula which is useful in production of unsaturated nitrites by ammoxidation: Mo10 Bia Feb Sbc Nid Cre Ff Gg ... | 11/12/2002 |
| 6475949 | Promoter for purifying internal engine exhaust and method for preparing the same The promoter includes (A) particulate aluminum oxide and (B) a double oxide of (i) cerium and (ii) at least one member selected from the group consisting of zirconium, yttrium, strontium, barium and rare earth elements, supported on the particulate alumin... | 11/05/2002 |
| 6475452 | Composition based on manganese and use for trapping NOx for treating exhaust gases The invention relates to compositions of the NOx trap type. According to a first embodiment, the composition comprises a supported phase containing manganese and at least one other element selected from terbium, gadolinium, europium, samarium, neodymium a... | 11/05/2002 |
| 6468941 | Niobium containing zirconium-cerium based soild solutions The present invention relates to high oxygen ion conducting/oxygen storage (OIC/OS) materials, a catalyst employing the OIC/OS materials, and a method for converting hydrocarbons, carbon monoxide and nitrogen oxides using the catalyst. The OIC/OS material... | 10/22/2002 |
| 6468484 | NO2 abatement composition with enhanced sulfur resistance A NOx adsorber composition comprising a substrate; and a washcoat, wherein said washcoat comprises a catalytic metal component, a trapping material, and a porous support, wherein said porous support comprises cerium oxide and an oxygenated meta... | 10/22/2002 |
| 6464946 | Catalytic converter for cleaning exhaust gas A catalytic converter for cleaning exhaust gas includes a heat-resistant support which is coated with particles of a zirconium complex oxide of the following formula, Zr1-(x+y) Cex Ry O2-z where "R" represents at lea... | 10/15/2002 |
| 6461995 | Extruded honeycomb dehydrogenation catalyst and method Extruded honeycomb dehydrogenation catalysts of high structural integrity, composed of potassium oxide (carbonate)-promoted oxide-stabilized iron oxides and having a honeycomb cell density in the range of 15-400 channels per square inch, a channel wall th... | 10/08/2002 |
| 6458742 | Catalyst for the manufacture of acrylonitrile A catalyst composition comprising a complex of catalytic oxides of iron, bismuth, molybdenum, cobalt, cerium, antimony, at least one of nickel or magnesium, and at least one of lithium, sodium, potassium, rubidium, or thallium, and characterized by the fo... | 10/01/2002 |
| 6458741 | Catalysts for low-temperature destruction of volatile organic compounds in air Catalyst compositions for destruction of volatile organic carbons (VOCs) in an oxygen-containing gas stream at low temperatures comprising: one or more first metals selected from the group consisting of: Ce and Zr; and at least one of: (a) one or more sec... | 10/01/2002 |
| 6444610 | Exhaust gas purifying catalyst An exhaust gas purifying catalyst comprises a hydrocarbon adsorbent layer containing zeolite as a main component and a metal-based catalyst layer containing any noble metal such as palladium, platinum, rhodium, etc. on a monolithic support that has a plur... | 09/03/2002 |
| 6440378 | Catalyst for purifying exhaust gases, a method of producing the same, and a method of purifying exhaust gases A noble metal composite colloid composed of a plurality of noble metals is constructed to be loaded on a porous oxide support. The noble metals are loaded in particles which are larger than the conventional grains in the atomic state. Thus, vapor pressure... | 08/27/2002 |
| 6423293 | Oxygen storage material for automotive catalysts and process of using The invention is a mixed oxide oxygen storage material useful as a catalyst or catalyst washcoat. The mixed oxide is praseodymium oxide loaded onto a support of either cerium oxide or cerium-zirconium oxide. The praseodymium oxide is loaded on the support... | 07/23/2002 |
| 6420587 | Catalyst system for producing aromatic carbonates A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy... | 07/16/2002 |
| 6419890 | SOX tolerant NOX trap catalysts and methods of making and using the same The present invention relates to sulfur tolerant catalyst composites useful for reducing contaminants in exhaust gas streams, especially gaseous streams containing sulfur oxide contaminants. More specifically, the present invention is concerned with impro... | 07/16/2002 |
| 6413483 | Catalytic converter for a lean burn internal combustion engine A layered exhaust gas catalyst containing Pt in a first layer and Rb in a second layer is more selective for catalyzing the reaction between NOx and/or nitrate with hydrocarbons and/or CO than for catalyzing the reaction between hydrocarbons an... | 07/02/2002 |
