High temperature-stable catalyst composition

Details High temperature-stable catalyst composition High temperature-stable catalyst composition

1978-02-14

1980-09-02

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252462, 252463, 252465, B01J 2906, B01J 2310, B01J 2316

Patent

active

042205590

ABSTRACT:
Catalysts having good high temperature stability which are particularly useful for carrying out high temperature reactions, such as combustion reactions at temperatures of the order of 1000.degree.-1400.degree. C., are disclosed. The catalytically active materials include precious metals, base metals or their oxides, or precious metals in combinstion with base metals, deposited on a catalyst slip or composite which contains alumina in admixture with a metal oxide component. The metal oxide component consists of a mixture of strontia or barium oxide with either molybdenum trioxide, zirconia, silica, or stannous oxide, or of a mixture of lanthana with either silica or stannous oxide. The slips or carrier compositions are calcined at a temperature of at least 500.degree. C. before deposition of the precious metal or base metal material, and are characterized by having a surface area of at least 20 m.sup.2 /g after calcination at a temperature of 1200.degree. C. for 4 hours.

REFERENCES:
patent: 3966790 (1976-06-01), Hindin et al.
patent: 4056489 (1977-11-01), Hindin et al.

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