发明名称 |
METHOD FOR PRODUCING CORE-SHELL CATALYST PARTICLES |
摘要 |
The present invention is to provide a method for producing core-shell catalyst particles with high catalytic activity per unit mass of platinum. Disclosed is a method for producing core-shell catalyst particles including a core containing palladium and a shell containing platinum and covering the shell, wherein the method includes: a step of depositing copper on the surface of the palladium-containing particles by applying a potential that is nobler than the oxidation-reduction potential of copper to the palladium-containing particles in a copper ion-containing electrolyte, and a step of forming the shell by, after the copper deposition step and inside the reaction system kept at -3°C or more and 10°C or less, substituting the copper deposited on the surface of the palladium-containing particles with platinum by bringing the copper into contact with a platinum ion-containing solution in which platinum ions and a reaction inhibitor that inhibits a substitution reaction between the copper and the platinum, are contained. |
申请公布号 |
EP3106223(A1) |
申请公布日期 |
2016.12.21 |
申请号 |
EP20140882348 |
申请日期 |
2014.12.22 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
KANEKO, Keiichi;KIMURA, Hiroko;ADACHI, Makoto |
分类号 |
B01J37/34;B01J23/44;B01J35/08;C23C18/42;C25D7/00;H01M4/86;H01M4/88;H01M4/92 |
主分类号 |
B01J37/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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