Patent ID: 7132385

Claim:
A method of preparing a high loading supported carbon catalyst, comprising: first, impregnating an amount of solvent ranging from about 0.5 ml to about 3.0 ml per 1 g of a carbon support and a first portion of a catalytic metal precursor into a carbon support; second, drying the carbon support comprising the impregnated catalytic metal precursor; third, reducing the carbon support comprising the impregnated catalytic metal precursor using hydrogen gas at a temperature in the range of about 120° C. to about 250° C. and then removing the hydrogen gas at a temperature in the range of about 200° C. to about 400° C. for forming preliminary catalytic metal particles; fourth, impregnating a metal salt solution an amount of solvent ranging from about 0.5 ml to about 3.0 ml per 1 g of carbon support and a second or remaining portion of the catalytic metal precursor wherein the second or remaining portion of the catalytic metal precursor is impregnated into the carbon support; fifth, drying the carbon support comprising the impregnated catalytic metal precursor and the preliminary catalytic metal particles; and sixth, reducing the carbon support comprising the impregnated catalytic metal precursor and the preliminary catalytic metal particles for forming the high loading supported carbon catalyst, wherein a loading of the supported catalytic metal precursor is in the range of about 30% to about 60% by weight.