Carl D Keith, William R Larsen, Thomas Shimrock: Catalyst compositions and the method of manufacturing them. Engelhard Minerals & Chemicals Corporation, October 16, 1979: US04171288 (137 worldwide citation)

Catalysts are disclosed which have good activity and life when used to promote the conversion of hydrocarbons, carbon monoxide and nitrogen oxides contained in small concentrations in gaseous streams, to obtain the less noxious materials, carbon dioxide, water and nitrogen. The catalysts contain a c ...

Zhicheng Hu, Chung Zong Wan, Yiu Kwan Lui, Joseph C Dettling: Layered catalyst composite. Engelhard Corporation, R A Negin, January 28, 1997: US05597771 (131 worldwide citation)

The present invention relates to a layered catalyst composite of the type generally referred to as a three-way conversion catalyst having the capability of substantially simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides. The structure of ...

Chung Zong Wan: Catalyst composition containing segregated platinum and rhodium components. Engelhard Corporation, October 15, 1991: US05057483 (122 worldwide citation)

A catalyst composition suitable for three-way conversion of internal combustion engine, e.g., automobile gasoline engine, exhaust gases includes a catalytic material disposed in two discrete coats on a carrier. The first coat includes a stabilized alumina support on which a first platinum catalytic ...

Ann M Lauritzen: Ethylene oxide catalyst and process for preparing the catalyst. Shell Oil Company, August 2, 1988: US04761394 (114 worldwide citation)

This invention relates to an ethylene oxide catalyst having an improved selectivity which catalyst comprises silver, a promoting amount of alkali metal and a promoting amount of rhenium supported on a porous refractory support.

Charles E Thompson, John J Mooney, Carl D Keith, William A Mannion: Polyfunctional catalysts. Engelhard Minerals & Chemicals Corporation, June 5, 1979: US04157316 (108 worldwide citation)

This invention provides polyfunctional catalysts comprising a composite of platinum and one or more of rhodium, ruthenium and iridium, a substantially larger quantity of one or more base metal oxides in which the metal is selected from the group consisting of metals having an atomic number from 25 t ...

Yoshimi Shiroto, Takeo Ono, Sachio Asaoka, Munekazu Nakamura: Catalysts for hydrotreatment of heavy hydrocarbon oils containing asphaltenes. Chiyoda Chemical Engineering & Construction, Armstrong Nakaido Marmelstein & Kubovcik, December 27, 1983: US04422960 (101 worldwide citation)

A catalyst for hydrotreating a heavy hydrocarbon oil containing asphaltenes comprises a porous carrier composed of one or more inorganic oxides of at least one element selected from among those of Groups II, III and IV of the Periodic Table, and at least one catalytic metal component composited with ...

Robert P Nielsen, John H La Rochelle: Catalyst for production of ethylene oxide. Shell Oil Company, June 8, 1976: US03962136 (96 worldwide citation)

When supported silver materials are being prepared, deposits of from about 4.0 .times. 10.sup.-.sup.5 to about 8.0 .times. 10.sup.-.sup.3 gram equivalent weights per kilogram of finished product of ionic, higher alkali metals, i.e., ionic potassium, rubidium or cesium simultaneously with the deposit ...

Fumio Abe, Naomi Noda, Makoto Hori, Toshimi Fukui: Catalyst for exhaust gas purification and process for production thereof. NGK Insulators, Krosaki Corporation, Parkhurst Wendel & Rossi, August 8, 1995: US05439865 (93 worldwide citation)

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 active catalyst component, and active alumin ...

Marek Matusz, Carolus M A M Mesters, John E Buffum: Ethylene oxide catalyst and process. Shell Oil Company, Pamela J McCollough, January 10, 1995: US05380697 (93 worldwide citation)

This invention relates to an ethylene oxide catalyst which contains silver and one or more alkali metal promoters supported an a carrier having a crush strength of at least about 5 pounds and a settled packing density of at least about 30 pounds/cubic foot which comprises first and second alpha alum ...

Madan M Bhasin: Catalyst composition for oxidation of ethylene to ethylene oxide. Union Carbide Chemicals and Plastics Technology Corporation, Sharon H Hegedus, October 15, 1991: US05057481 (91 worldwide citation)

This invention relates to the catalysts for the manufacture of ethylene oxide at commercial concentrations in the presence of carbon dioxide gas recycle which contains impregnated silver on a support and a mixture of cesium salts, at least one of which is a cesium salt in which the anions thereof ar ...