Thermally durable low H.sub.2 S three-way catalysts

Details Thermally durable low H.sub.2 S three-way catalysts Thermally durable low H.sub.2 S three-way catalysts

1998-01-08

2000-02-08

Bell, Mark L.

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502304, 502326, 502333, 502335, 502337, 502339, 502439, 50252712, 50252715, B01J 2300, B01J 2340, B01J 2342, B01J 2104

Patent

active

060228253

ABSTRACT:
Improved platinum group three-way catalyst composition comprising (a) a high temperature catalyst support material, (b) a low temperature catalyst support material, (c) at least one platinum group metal, and (d) a metal additive effective for the suppression of hydrogen sulfide emissions, that is disposed in a separate layer either under or over a layer comprising the constituents (a), (b), and (c), or in the same layer as the constituents (a), (b), and (c). When the metal additive is disposed in the same layer as the constituents (a), (b), and (c), (d) the metal additive is disposed in a physical structure that is segregated from the remaining components in the layer.

REFERENCES:
patent: 4414140 (1983-11-01), Setzer
patent: 4693882 (1987-09-01), Setzer et al.
patent: 4727052 (1988-02-01), Wan et al.
patent: 4755498 (1988-07-01), Setzer et al.
patent: 4760044 (1988-07-01), Joy, III et al.
patent: 4939113 (1990-07-01), Tauster et al.
patent: 5015617 (1991-05-01), Ohata et al.
patent: 5057483 (1991-10-01), Wan
patent: 5081095 (1992-01-01), Bedford et al.
patent: 5182249 (1993-01-01), Wang et al.
patent: 5196390 (1993-03-01), Tauster et al.
patent: 5254519 (1993-10-01), Wan et al.
patent: 5286699 (1994-02-01), Ohata et al.
patent: 5597771 (1997-01-01), Hu et al.

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