Catalyst for reduction of nitrogen oxides and process for prepar

Details Catalyst for reduction of nitrogen oxides and process for prepar Catalyst for reduction of nitrogen oxides and process for prepar

1976-03-19

1977-10-04

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

423239, B01J 2906, B01J 800, C01B 2100

Patent

active

040523373

ABSTRACT:
Nitrogen oxides are removed from gaseous mixtures comprising the same by contacting with a catalyst comprising a base metal component carried on a natural or synthetic zeolite in the presence of ammonia. The alkali metal content of the zeolite is carefully controlled through ion exchange with an alkaline earth metal compound.

REFERENCES:
patent: 3346328 (1967-10-01), Sergeys et al.
patent: 3436356 (1969-04-01), Kato et al.
patent: 3476508 (1969-11-01), Kearby et al.
patent: 3498928 (1970-03-01), Cho et al.
patent: 3689212 (1972-09-01), Petit et al.
patent: 3895094 (1975-07-01), Carter

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