Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1973-12-10
1976-05-11
Shaver, Paul F.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252466PT, 431 2, B01J 2316, B01J 2362, B01J 2382
Patent
active
039561887
ABSTRACT:
Catalysts having good high temperature stability which are particularly useful for selected high temperature reactions are disclosed as are methods for their preparation and use. The catalytically-active materials include platinum group metal deposited on a catalytic slip or composite which contains a mixture of alumina, a rare earth metal oxide, and a metallic oxide wherein the metal is IVB, selected VIB metals, and mixtures thereof. The slips or carrier compositions are calcined at a temperature of at least 850.degree.C. before deposition of platinum group metal and characterized by having a surface area of at least 20 m.sup.2 /g after calcination at a temperature of 1200.degree.C. for two hours.
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Dettling Joseph C.
Hindin Saul G.
Engelhard Minerals & Chemicals Corporation
Shaver Paul F.
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