Hydrogen sulfide-suppressing catalyst compositions

Details Hydrogen sulfide-suppressing catalyst compositions Hydrogen sulfide-suppressing catalyst compositions

2006-04-04

2006-04-04

Johnson, Christina (Department: 1725)

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S325000, C502S328000, C502S302000, C502S327000, C502S339000, C502S340000, C502S349000, C502S355000

Reexamination Certificate

active

07022644

ABSTRACT:
Hydrogen sulfide formation is suppressed by a three-way conversion catalyst having an underlayer and a topcoat overlying the under layer. The under layer is prepared by dispersing a Group IIa metal oxide such as an oxide of magnesium, calcium, barium or strontium on a carrier such as a refractory metal oxide monolith. A topcoat overlying the undercoat is comprised of a three-way conversion catalyst material such as a platinum-group metal catalytic component, e.g., platinum, palladium, rhodium or mixtures thereof.

REFERENCES:
patent: 4552733 (1985-11-01), Thompson et al.
patent: 4780447 (1988-10-01), Kim et al.
patent: 4923842 (1990-05-01), Summers
patent: 4939113 (1990-07-01), Tauster et al.
patent: 4977129 (1990-12-01), Ernest
patent: 5045521 (1991-09-01), Lox et al.
patent: 5057483 (1991-10-01), Wan
patent: 5116800 (1992-05-01), Williamson 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: 5677258 (1997-10-01), Kurokawa et al.
patent: 5702675 (1997-12-01), Takeshima et al.
patent: 5874057 (1999-02-01), Deeba et al.
patent: 6022825 (2000-02-01), Andersen et al.
patent: 6066587 (2000-05-01), Kurokawa et al.
patent: 6254842 (2001-07-01), Hu et al.
patent: 6294140 (2001-09-01), Mussmann et al.
patent: 6348430 (2002-02-01), Lindner et al.
patent: 2002/0091064 (2002-07-01), Nakamura et al.
patent: 2003/0021745 (2003-01-01), Chen
patent: 2003/0083197 (2003-05-01), Noda et al.
patent: 2003/0100447 (2003-05-01), Deeba et al.
patent: 0 427 493 (1990-11-01), None
patent: 0 885 650 (1998-12-01), None
patent: 0 931 590 (1999-07-01), None
patent: 1 138 382 (2001-04-01), None

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