Method of cleaning exhaust gases

Details Method of cleaning exhaust gases Method of cleaning exhaust gases

1987-11-12

1989-03-21

Doll, John

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

B01D 5336

Patent

active

048141534

ABSTRACT:
A method of cleaning an exhaust gas containing nitrogen oxides, carbon monoxide and an excess of molecular oxygen, which comprises passing the exhaust gas together with ammonia over a catalyst comprising (A) 60 to 99.9% by weight of a catalytic oxide composed of a titanium containing oxide, (B) 0.1 to 20% by weight of a catalytic oxide composed of at least one metal oxide selected from the group consisting of oxides of copper, manganese and chromium and (C) 0 to 20% by weight of a catalytic oxide composed of at least one metal oxides selected from the group consisting of oxides of vanadium, tungsten, molybdenum, cerium and tin at a temperature of 200.degree. to 500.degree. C.

REFERENCES:
patent: 4018706 (1977-04-01), Inoue et al.
patent: 4048112 (1977-09-01), Matsushita et al.
patent: 4131643 (1978-12-01), Utsunomiya et al.
patent: 4188364 (1980-02-01), Gladden
patent: 4221768 (1980-09-01), Inoue et al.
patent: 4282115 (1981-08-01), Atsukawa et al.

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