发明名称 |
Oxidative Control of Pore Structure in Carbon-Supported PGM-Based Catalysts |
摘要 |
A carbon supported catalyst includes a carbon support having an average micropore diameter is less than about 70 angstroms and a platinum-group metal being disposed over the carbon support. A method for making the carbon supported catalyst includes a step of providing a first carbon supported catalyst having a platinum-group metal supported on a carbon support. The first carbon supported catalyst has a first average micropore diameter, and a first average surface area. The first carbon supported catalyst is contacted with an oxygen-containing gas at a temperature less than about 250° C. for a predetermined period of time to form a second carbon supported catalyst. The second carbon supported catalyst has a second average pore diameter and a second average surface area. Characteristically, the second average pore diameter is greater than the first average pore diameter, and the second average surface area is less than the first average surface area. |
申请公布号 |
US2017033368(A1) |
申请公布日期 |
2017.02.02 |
申请号 |
US201514815450 |
申请日期 |
2015.07.31 |
申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS LLC |
发明人 |
CARPENTER Michael K.;LIU Zhongyi;KONGKANAND Anusorn |
分类号 |
H01M4/92;H01M8/1018 |
主分类号 |
H01M4/92 |
代理机构 |
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代理人 |
|
主权项 |
1. A carbon supported catalyst comprising:
a carbon support having an average pore diameter that is greater than 50 angstroms, and an average surface area less than about 500 m2/g; and a platinum-group metal being disposed over the carbon support. |
地址 |
Detroit MI US |