Exhaust gas cleaning catalysts and method of producing same

Details Exhaust gas cleaning catalysts and method of producing same Exhaust gas cleaning catalysts and method of producing same

1973-12-06

1976-02-17

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252465, 252466J, 252466B, 4232132, 4232135, B01J 2104, B01J 2374, B01J 2384

Patent

active

039390977

ABSTRACT:
Exhaust gas cleaning catalysts are produced by alloying copper and aluminum with at least one of the elements, nickel and chromium, and eluting by alkali or acid means aluminum from the cooled alloy surface. Small amounts of other metals from the fourth or fifth period V.about. VIII groups, may be added to the catalysts by alloying, or by impregnation, for enhanced catalytic properties. The catalysts exhibit improved reduction of NO and oxidation of CO in an exhaust gas stream, in the presence of Pb, SO.sub.2, moisture and hydrocarbons (H.C) and at relatively low temperatures.

REFERENCES:
patent: 2673189 (1954-03-01), Reynolds et al.
patent: 3565574 (1971-02-01), Kearby et al.
patent: 3712856 (1973-01-01), Betz
patent: 3773894 (1973-11-01), Bernstein et al.

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