Catalyst for the reduction of oxides of nitrogen

Details Catalyst for the reduction of oxides of nitrogen Catalyst for the reduction of oxides of nitrogen

1986-02-18

1988-04-05

Dees, Carl F.

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

Zeolite or clay, including gallium analogs

Mordenite type

502 67, 423239, B01J 2924, B01J 2926

Patent

active

047359307

ABSTRACT:
A catalyst for the selective reduction of nitrogen oxides to nitrogen in the presence of ammonia in the form of composite bodies formed from a mixture of zirconia (5 to 50% by weight), a zeolite (50 to 90%), a bond material (0 to 30%), and, optionally, a promoter selected from oxides of vanadium and copper in the amount of at least 0.1% by weight.

REFERENCES:
patent: 3345135 (1967-10-01), Kerr et al.
patent: 3346328 (1967-10-01), Sergeys et al.
patent: 3615166 (1971-10-01), Hindin et al.
patent: 3895094 (1975-07-01), Carter et al.
patent: 4085193 (1978-04-01), Nakajima et al.
patent: 4220632 (1980-09-01), Pence et al.
patent: 4473535 (1984-09-01), Kittrell et al.
patent: 4663300 (1987-05-01), Lester et al.

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