Catalyst composition with support comprising titanium oxide and

Details Catalyst composition with support comprising titanium oxide and Catalyst composition with support comprising titanium oxide and

1977-04-12

1979-02-20

Douglas, Winston A.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252455R, 423239, B01J 2702, B01J 2116, B01J 2106, B01J 800

Patent

active

041406540

ABSTRACT:
A catalyst composition for the vapor phase reduction of nitrogen oxides with ammonia, which consists essentially of a non-noble transition metal compound supported on a shaped carrier comprising a titanium oxide and a clay mineral having an average particle size of 0.1 to 100 microns. The shaped carrier preferably contains an additional component which is an inorganic fibrous material, silica hydrogel, silica sol, or a mixture of at least two of these. An exhaust gas containing nitrogen oxides is treated, with a high percent NO removal, by contacting it with the catalyst composition in the presence of ammonia gas at 200 to 600.degree. C.

REFERENCES:
patent: 2862875 (1958-12-01), Morrell
patent: 3888845 (1975-06-01), Fujita et al.
patent: 3928238 (1975-12-01), Korberstein et al.
patent: 3948807 (1976-04-01), Fuchigami et al.
patent: 3972834 (1976-08-01), Washbourne
patent: 4010238 (1977-03-01), Shiraishi et al.
patent: 4048112 (1977-09-01), Matsushita et al.

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