Metal oxide catalytic compositions

Details Metal oxide catalytic compositions Metal oxide catalytic compositions

1976-06-03

1978-08-29

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252464, 252465, 252466B, 252466PT, 252471, 252472, 252473, 252474, 4232135, B01J 2104, B01J 2310, B01J 2358, B01J 2364

Patent

active

041102541

ABSTRACT:
Catalytic compounds having the general formula ABO.sub.3 and a perovskite crystal structure, wherein about from 1 to 20% of the B site cations are ions of a platinum metal, the remainder of the B site cations are ions of metals having atomic radii between about from 0.4 and 1.4 Angstroms, and the A site cations consist essentially of ions of a metal having an atomic number of 11 to 51, 57 to 71, or 89 to 103, useful for the promotion of gaseous oxidation and reduction reactions, particularly in the cleanup of exhaust gases of internal combustion engines.

REFERENCES:
patent: 3900428 (1975-08-01), Mai et al.
patent: 3901828 (1975-08-01), Mai et al.
patent: 3907968 (1975-09-01), Kobylinski et al.

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