Exhaust gas conversion catalyst

Details Exhaust gas conversion catalyst Exhaust gas conversion catalyst

1976-07-19

1977-10-11

Peters, G. O.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252460, 252466B, 252472, 252477R, 4232135, B01J 2340

Patent

active

040534340

ABSTRACT:
A porous catalytic composite is provided which is effective for the simultaneous conversion of nitrogen oxides, carbon monoxide and hydrocarbons in engine exhaust gases. The composite comprises at least two physically separate but contiguous components. The first component comprises a porous inert support having dispersed thereon rhodium plus nickel and/or cobalt, and is essentially free of platinum and palladium. The second component comprises a porous inert support having dispersed thereon platinum and/or palladium, with or without nickel and/or cobalt, and is essentially free of rhodium.

REFERENCES:
patent: 3801697 (1974-04-01), Kobylinski et al.
patent: 3849538 (1974-11-01), Campbell et al.
patent: 3856702 (1974-12-01), McArthur
patent: 3886260 (1975-05-01), Unland
patent: 3910770 (1975-10-01), Kobylinski et al.
patent: 3919120 (1975-11-01), Kato et al.
patent: 3929965 (1975-12-01), Kim

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