Catalysts and the process for their production

Details Catalysts and the process for their production Catalysts and the process for their production

1976-11-22

1978-08-08

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252465, 4232135, B01J 2104, B01J 2360, B01J 2364, B01J 2374

Patent

active

041055900

ABSTRACT:
A catalyst is described capable of inducing reduction in nitrogen oxide pollutants of exhaust gases from internal combustion engines and industrial plants. The catalyst composition is formed from a mixture of catalytically active aluminum oxides and a mixture of at least two metal oxides, one which is chromium oxide and the other is an oxide of an element of the First Transition Series, impregnated with about 1% by weight of an impregnant comprising a catalytically active noble metal compound. An optional constituent of the catalyst compositions includes 0.5-10% by weight of beryllium, magnesium, calcium, strontium or barium in the mixed oxide composition.

REFERENCES:
patent: 3257163 (1966-06-01), Stiles
patent: 3669906 (1972-06-01), Koberstein et al.
patent: 3741725 (1973-06-01), Graham
patent: 3787322 (1974-01-01), Koberstein et al.
patent: 3787333 (1974-01-01), Ichihara et al.

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