Cobalt-oxide-based catalytic substances for the oxidation of amm

Details Cobalt-oxide-based catalytic substances for the oxidation of amm Cobalt-oxide-based catalytic substances for the oxidation of amm

1974-03-18

1976-06-08

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252466J, 423392, B01J 2104, B01J 2310, B01J 2380

Patent

active

039621383

ABSTRACT:
The invention concerns catalytic substances for the oxidation of ammonia, for the production of nitric acid, comprising cobalt oxide as the main component. Such substances, besides cobalt oxide, also contain additives formed of aluminum oxide and possibly oxides of thorium, cerium, zinc and cadmium, the amount of aluminum oxide added being from 5% to 15% by weight of the finished substances and the amount of the other oxides being from 0 to 25% by weight of the finished substances; these substances are in particular shaped by pelleting or extrusion, dried and then calcined at temperatures of the order of from 900.degree. to 1000.degree.C. The advantages of these catalytic substances lie in a high degree of activity and a high level of strength, which are maintained during use thereof.

REFERENCES:
patent: 858904 (1907-07-01), Ostwald
patent: 1207706 (1916-12-01), Bosch et al.
patent: 1399807 (1921-12-01), Scott
patent: 1713045 (1929-05-01), Jacobson
patent: 1919005 (1933-07-01), Bray
patent: 2467446 (1949-04-01), Smithells

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