Ruthenium-containing perovskite catalysts

Details Ruthenium-containing perovskite catalysts Ruthenium-containing perovskite catalysts

1978-08-25

1980-01-08

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252466PT, 252470, 252471, 252472, 252473, 252474, 4232135, B01J 2310, B01J 2340, B01J 2372, B01J 2374

Patent

active

041826949

ABSTRACT:
Catalytic compositions having the general formula, ABO.sub.3, and a perovskite crystal structure, wherein 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. About 1% to 20% of the Type B cation sites are occupied by ions of at least one platinum group metal selected from ruthenium, osmium, rhodium, iridium, palladium and platinum, with ruthenium being present and occupying up to about 10% of the Type B cation sites. The balance of 80% to 99% of the Type B cation sites are occupied by ions of at least one metal having an atomic radius between 0.4 to 1.4 Angstroms. The compositions are useful in gaseous oxidation and reduction reactions.

REFERENCES:
patent: 3900428 (1975-08-01), Mai et al.
patent: 3905918 (1975-09-01), Mai et al.
patent: 3907968 (1975-09-01), Kobylinski et al.

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