Catalysts for the purification of exhaust gas

Details Catalysts for the purification of exhaust gas Catalysts for the purification of exhaust gas

1994-02-23

1995-06-27

Pal, Asok

Catalyst, solid sorbent, or support therefor: product or process

Zeolite or clay, including gallium analogs

And additional al or si containing component

4232135, 4232392, 502 74, B01J 29068

Patent

active

054279895

ABSTRACT:
A catalyst for the purification of exhaust gas comprises a first coating layer of activated alumina containing at least one of Pt, Pd and Rh, a second coating layer of activated alumina containing no noble metal and a third coating layer of zeolite ion-exchanged with Cu or Co and develops excellent purification performance in lean-burn atmosphere after engine aging treatment.

REFERENCES:
patent: 3476508 (1969-11-01), Kearby

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