Catalysts supported on at least partially polycrystalline...

Details Catalysts supported on at least partially polycrystalline... Catalysts supported on at least partially polycrystalline...

B - Operations, Transporting

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B01J 37/00 (2006.01) B01J 21/18 (2006.01) B01J 23/40 (2006.01) B01J 37/12 (2006.01) B01J 37/34 (2006.01)

Patent

CA 1084477

A B S T R A C T A method for manufacturing improved supported catalysts comprising selecting as a support material a material con- taining at least a proportion of carbon in the form of poly- crystalline graphite, subjecting the said support material to a form of surface oxidation to produce oxide groups, which may be acidic or basic in nature, impregnating the said surface oxidized support material with a solution containing ac- cordingly cations or anions of a catalyst metal to form salts therewith and subsequently drying and reducing the salts to form a layer of catalyst metal on the surfaces of the said support material. The catalysts thus prepared are particularly suitable as fuel cell electrode catalysts having an improved activity.

257046

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