B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
319/19, 252/37
B01J 21/18 (2006.01) B01J 23/38 (2006.01) B01J 23/42 (2006.01) H01M 4/92 (2006.01) H01M 4/86 (2006.01)
Patent
CA 1085371
ABSTRACT OF THE DISCLOSURE 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 ?eat treated carbon particles which will catalyze the oxidation of graphite in an oxidizing atmosphere, ant oxidizing the surfaces of the heat treated carbon particles at the sites of the catalyst crystals 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. -1-
275327
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
United Technologies Corporation
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