Catalyst for purifying exhaust gases and a method for producing

Details Catalyst for purifying exhaust gases and a method for producing Catalyst for purifying exhaust gases and a method for producing

1981-03-04

1983-01-04

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252455R, 252457, 252462, 4232135, B01J 2104, B01J 2106, B01J 2310, B01J 2342

Patent

active

043671624

ABSTRACT:
A catalyst for reducing nitrogen oxides, carbon monoxide and hydrocarbons, the noxious components in exhaust gases from internal combustion engines, etc., which comprises: a carrier having a substructure of refractory material in the form of a honeycomb structure, etc., and a porous layer of a powder formed on the surface thereof selected from the group consisting of a powder of zirconium oxide and a mixed powder of zirconium oxide powder with at least one powder selected from the group consisting of alumina, alumina-magnesia spinel and cerium oxide; and a catalyst ingredient supported thereon consisting of cerium oxide and a metal selected from the group consisting of platinum, palladium and mixtures thereof.

REFERENCES:
patent: 3669906 (1972-06-01), Koberstein et al.
patent: 3850847 (1974-11-01), Graham et al.
patent: 4076792 (1978-02-01), Foster et al.
patent: 4261862 (1981-04-01), Kinoshita et al.

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