| Patent Number |
Title Of Patent |
Date Issued |
| 6214306 |
Composition based on zirconium oxide and cerium oxide, preparation method therefor and use there |
April 10, 2001 |
| The invention relates to a composition based on zirconium oxide and comprising cerium oxide which has a specific surface of at least 30 m.sup.2 /g after calcination for 6 hours at 900.degree. C. and which is provided in the form of a pure solid solution of cerium oxide in zirconium o |
| 6083869 |
Method for preparing ammoxidation catalysts |
July 4, 2000 |
| The present invention relates to a process for the preparation of mixed vanadium, antimony and iron oxides and to their use as catalysts for the ammoxidation of alkanes. The process for the preparation of a mixed oxide defined above is characterized in that:respective vanadium, antimony |
| 5686381 |
Mixed V/Sb/Sn oxide ammoxidation catalysts |
November 11, 1997 |
| Vanadium/antimony/tin mixed oxides having the empirical formula (I):exhibit an X-ray diffraction pattern characteristic of a crystallographic phase of rutile SnO.sub.2, are well suited as catalysts for the vapor phase ammoxidation of alkanes, and are conveniently prepared by (a) dissolvi |
| 5663392 |
Preparation of VSb.sub.a aTi.sub.b O.sub.x ammoxidation catalysts |
September 2, 1997 |
| Mixed oxide vanadium/antimony/titanium ammoxidation catalysts, particularly suited for the ammoxidation of alkanes and exhibiting X-ray diffraction spectra which are characteristic of a crystallographic phase of rutile TiO.sub.2, are prepared by (a) dissolving respective soluble compound |
| 5556984 |
Ammoxidation of saturated hydrocarbons |
September 17, 1996 |
| The saturated hydrocarbons, typically alkanes having from 3 to 12 carbon atoms, e.g., propane, are selectively ammoxidized into .alpha.,.beta.-unsaturated nitriles and olefins, e.g., acrylonitrile and propylene, by reacting such alkanes with ammonia and oxygen, in vapor phase and in |
| 5352646 |
Supported catalysts |
October 4, 1994 |
| Novel supported catalysts, well adapted for the catalytic conversion of exhaust gases emanating from internal combustion engines, include a porous carrier material, e.g., alumina spheres, such porous carrier material having a catalytically effective amount of at least one non-platinum gr |
| 5336804 |
Ammoxidation of saturated hydrocarbons |
August 9, 1994 |
| The alkanes, e.g., propane, are ammoxidized into admixtures containing .alpha.,.beta.-unsaturated nitriles, e.g., admixture of acrylonitrile and propylene, by reacting such alkane with ammonia and oxygen, in vapor phase, in the presence of a catalytically effective amount of a solid |
| 5334743 |
Catalytic ammoxidation of saturated hydrocarbons |
August 2, 1994 |
| The alkanes, e.g., propane, are selectively converted (ammoxidized) into admixtures comprising .alpha.,.beta.-unsaturated nitriles, e.g., acrylonitrile, by reacting same with ammonia and oxygen, in vapor phase, and in the presence of a catalytically effective amount of a solid cataly |
| 5124304 |
Multi-purpose catalyst for vehicular catalytics converters |
June 23, 1992 |
| Multiple purpose catalysts adapted for the treatment of internal combustion engine exhaust gases comprise a particulate refractory oxide support, e.g., alumina particles, having an active catalytic phase deposited thereon, said active catalytic phase including zirconium, cerium and p |
| 5053378 |
Multi-purpose catalysts for vehicular catalytic converters |
October 1, 1991 |
| Multiple purpose catalysts adapted for the treatment of internal combustion engine exhaust gases comprise a particulate refractory oxide support, e.g., alumina particles, having an active catalytic phase deposited thereon, said active catalytic phase including zirconium, cerium and p |
| 4985387 |
Catalyst supports/catalysts for the treatment of vehicular exhaust gases |
January 15, 1991 |
| Thermally stable, sulfur-resistant catalysts for the conversion of exhaust gases from internal combustion engines includes an inert, rigid support substrate, e.g., a cellular monolith, coated with a layer of porouse material, the porous material containing alumina, at least one rare eart |
| 4931419 |
Catalyst for the conversion of vehicular exhaust gases and process for preparing the catalyst |
June 5, 1990 |
| Improvedly time-stable catalysts adopted for the treatment of internal combustion engine exhaust gases include a monolithic catalyst support impregnated with a plurality of catalytically active phases, one section of the support being impregnated with a first catalytically active phase |
| 4680282 |
Pollution control catalyst for internal combustion engine exhaust gases and process for producin |
July 14, 1987 |
| A multifunctional pollution control catalyst for the treatment of exhaust gases from internal combustion engines is comprised of a catalyst support having an active catalytic phase deposited thereon, said active catalytic phase comprising catalytically effective amounts of (i) zirconium, |
| 4621071 |
Composite catalyst for treatment of vehicular exhaust gases and process for the preparation of t |
November 4, 1986 |
| 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, rhenium, silver, gold or plurality |
| 4588497 |
Process for the catalytic reforming or aromatic hydrocarbons production |
May 13, 1986 |
| The invention concerns a catalytic reforming process, operated in the presence of 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.At least a portion |
| 4581343 |
Process for the preparation of a pollution control catalyst for internal combustion engine exhau |
April 8, 1986 |
| A pollution control catalyst for a catalytic converter in the exhaust system of an internal combustion engine, which catalyst comprises a support impregnated with (i) at least one platinum group precious metal, and with (ii) cerium base metal, or a combination of cerium and at least |
| 4492770 |
Catalyst and use thereof in treating internal combustion engine exhaust gases |
January 8, 1985 |
| Provided is an improved catalyst and a process employing same in the treatment of exhaust gases generated by internal combustion engines. The catalyst comprises a support and an active phase comprising copper, cerium and/or iron, at least one metal selected from the group consisting of |
| 4492769 |
Pollution control catalyst for internal combustion engine exhaust system/catalytic converter and |
January 8, 1985 |
| A pollution control catalyst for a catalytic converter within the exhaust system of an internal combustion engine is facilely prepared by (i) coating/impregnating a catalyst support with palladium and at least one base metal catalyst, (ii) activating the step (i) catalyst, (iii) next |
| 4426319 |
Catalyst for treatment of exhaust gases from internal combustion engines |
January 17, 1984 |
| The exhaust gases from internal combustion engines are catalytically oxidized/reduced, to remove CO, unburned hydrocarbons and NO.sub.x therefrom, utilizing an improved stable and long-lived catalyst which comprises (1) a support substrate, e.g., a monolithic or particulate support, |
