Catalysts for cleaning exhaust gases

Details Catalysts for cleaning exhaust gases Catalysts for cleaning exhaust gases

1997-10-01

1999-10-26

Dunn, Thomas

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

Zeolite or clay, including gallium analogs

And additional al or si containing component

502 64, 502 71, 502 74, 502 77, B01J 29068

Patent

active

059728213

ABSTRACT:
A catalyst for cleaning exhaust gases has a first catalyst layer having as an active metal on an elemental support at least one noble metal selected from the group consisting of platinum, rhodium and palladium and a second catalyst layer having iridium as an active metal which is provided as a overlayer on the first catalyst layer.

REFERENCES:
patent: 5164350 (1992-11-01), Abe et al.
patent: 5489561 (1996-02-01), Iwakuni et al.
patent: 5677254 (1997-10-01), Nojima et al.
patent: 5710084 (1998-01-01), Nojima et al.

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