Electrocatalysts and a method for the preparation thereof

Details Electrocatalysts and a method for the preparation thereof Electrocatalysts and a method for the preparation thereof

B - Operations, Transporting

01

J

319/23, 252/1.A

B01J 23/40 (2006.01) B01J 21/18 (2006.01) B01J 37/06 (2006.01) H01M 4/90 (2006.01) H01M 4/96 (2006.01)

Patent

CA 1097307

ABSTRACT OF THE DISCLOSURE Electrocatalysts which may be used in the preparation of elec- trodes for electrochemical cells such as fuel cells comprise a carbonace- ous pyropolymer having the surface thereof impregnated with at least one catalytically active metal. The electrocatalysts may be prepared by treat- ing a refractory inorganic oxide with a pyrolyzable organic compound at pyrolysis conditions to form a carbonaceous pyropolymer on the surface of said refractory inorganic oxide. Thereafter the composite may be im- pregnated with a soluble salt of at least one catalytically active metal and thereafter the composite may be leached to remove the refactory inor- ganic oxide. Alternatively, the composite may be leached to remove the refractory inorganic oxide prior to impregnation with the catalytically active metal.

293905

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