Catalyst for purifying exhaust gas

Details Catalyst for purifying exhaust gas Catalyst for purifying exhaust gas

1991-06-28

1992-08-25

Dees, Carl F.

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

Zeolite or clay, including gallium analogs

Including organic component

502 75, B01J 2906, B01J 3720

Patent

active

051419068

ABSTRACT:
A catalyst for purifying an exhaust gas comprising a zeolite catalyst ion-exchanged with a transition metal, which is heat-treated in a gas stream containing a sulfur oxide, optionally followed by washing with a glycol.

REFERENCES:
patent: 3337447 (1967-08-01), Rigney et al.
patent: 3497462 (1970-02-01), Kruerke
patent: 4170571 (1979-09-01), Ritscher
patent: 4297328 (1981-10-01), Ritscher et al.
patent: 4331644 (1982-05-01), Ritscher
patent: 4738947 (1988-04-01), Wan et al.
patent: 4877590 (1989-10-01), Epperly et al.
patent: 5041272 (1991-08-01), Tamura et al.
Patent Abstracts of Japan, vol. 13, No. 379 (C-628 [3727], Aug. 22, 1989; and JP-A-01 130 735 (Toyotoa motor Corp.) May 23, 1989.

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