B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
319/23, 252/91
B01J 21/18 (2006.01) B01J 23/42 (2006.01) H01M 4/92 (2006.01) H01M 4/96 (2006.01) H01M 4/86 (2006.01)
Patent
CA 1104998
ABSTRACT OF THE DISCLOSURE The invention relates to a fuel cell including an improved catalyst comprising small platinum crystallites sup- ported on carbon particles. The crystallites have porous carbon deposited on and around them, the catalyst with the porous carbon deposits having been heated in an inert atmosphere or vacuum to within the temperature range of 1500°F to 2250°F, the temperature having been held within the above range for one-half to six hours. The invention also relates to a method for improving a catalyst of platinum crystallites which includes the steps of heating the catalyst in an inert atmosphere or vacuum to within the temperature range of 1500°F to 2250°F, and holding the temperature within the range for one-half to six hours.
313590
Bushnell Calvin L.
Jalan Vinod M.
Swabey Ogilvy Renault
United Technologies Corporation
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