Abstract: This invention relates to a catalyst suitable for use in the process of a) the reduction of an oxide of nitrogen present in a gas containing nitrogen, and b) for the oxidation of carbon monoxide or one or more organic compounds present in a gas. The catalyst comprises an inert material impregnated or coated with a mixture or alloy comprising 5-75 wt.% ruthenium, optionally 0-30 wt.% base metal and balance platinum in an amount not less than 5 wt.%.

Abstract: This invention relates to processes for catalytically oxidizing organic compounds (for example, methane, ethane, propylene and carbon monoxide), catalytically reducing oxides of nitrogen with a reducing fuel as well as for the production of methane by the steam reforming of naphtha and naphtha distillates. The catalyst used in such processes consists essentially of an inert, rigid, porous refractory honeycomb structure coated with a mixture or alloy of platinum, rhodium and a base metal in which rhodium constitutes from 1 - 50 weight % and the base metal constitutes from 0.01 to 25 weight % of the total metal content.

Abstract: This invention relates to processes for catalytically oxidizing organic compounds (for example methane, ethane, propylene and carbon monoxide) catalytically reducing oxides of nitrogen with a reducing fuel and the production of methane by the steam reforming of naphtha and naphtha distillates. In particular the invention relates to a process for the oxidation of carbon monoxide or a hydrocarbon present in an oxygen-containing gas stream to carbon dioxide and water.

Abstract: This invention relates to catalyst for use in the control of atmospheric pollution and, in particular, to the purification of exhaust gases from internal combustion engines. Specific catalysts of the present invention comprise:A. ruthenium or an alloy thereof and a metal oxide capable of forming a stable mixed oxide (or "ruthenite") with ruthenium dioxide;B. a compound formed by ruthenium dioxide and a metal oxide capable of forming a stable mixed oxide (or ruthenite) with ruthenium dioxide; andC. a mixed oxide containing ruthenium, the oxide being selected from the group consisting of oxides of the pyrochlore type A.sub.2 B.sub.2 O.sub.7, the perovskite type ABO.sub.3, the ilmenite type B.sub.2 O.sub.3 and the spinel type AB.sub.2 O.sub.4.Particularly good results have been obtained where the platinum/ruthenium ratio is within the range 25- 95 wt.% platinum and 5 - 75 wt.% ruthenium.

Abstract: This invention relates to a catalyst suitable for use in the process of a) the reduction of an oxide of nitrogen present in a gas containing nitrogen, and b) for the oxidation of carbon monoxide or one or more organic compounds present in a gas. The catalyst comprises an inert material impregnated or coated with a mixture or alloy comprising 5-75 weight % ruthenium, optionally 0-30 weight % base metal and balance platinum in an amount not less than 5 weight %.

Abstract: This invention relates to a catalyst comprising an inert material impregnated or coated with a mixture or alloy of platinum and rhodium in which rhodium is present in an amount up to 20 wt.%. The catalyst is particularly suitable for use in 1) catalytically reducing an oxide of nitrogen in a gaseous stream, 2) the oxidation of an organic compound in a gas also containing oxygen and 3) the preparation of methane by the steam reforming of naphtha or naphtha distillates.