Support material for a noble metal catalyst and method for makin

Details Support material for a noble metal catalyst and method for makin Support material for a noble metal catalyst and method for makin

1976-06-01

1977-06-07

Garvin, Patrick P.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

2524253, 252444, 427115, B01J 2118, B01J 2342

Patent

active

040282740

ABSTRACT:
A support material for platinum, platinum alloys, or other noble metal catalyst, is made from carbon particles by heat treating the carbon until it is at least partially graphitized, depositing a metal on the heat treated carbon particles which will catalyze the oxidation of graphite in an oxidizing atmopshere, and oxidizing the surfaces of the heat treated carbon particles at the sites of the catalyst crysals to pit or etch the surfaces at these sites. When this material is used as a support for platinum it reduces the rate of platinum migration when the supported platinum catalyst is heated in the presence of a liquid, thereby reducing the loss of platinum surface area which often occurs under these conditions.

REFERENCES:
patent: 3406011 (1968-10-01), Zirngibl et al.
patent: 3663166 (1971-05-01), Weise et al.
patent: 3804916 (1974-04-01), Lalancette

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