METHOD FOR PRODUCING CATALYST WHEREIN CATALYST PARTICLES HAVING CORE/SHELL STRUCTURE ARE SUPPORTED

Title:

METHOD FOR PRODUCING CATALYST WHEREIN CATALYST PARTICLES HAVING CORE/SHELL STRUCTURE ARE SUPPORTED

Document Type and Number:

WIPO Patent Application WO/2016/143618

Kind Code:

A1

Abstract:

The present invention relates to a method for forming catalyst particles, each of which has a core/shell structure, by a Cu-UPD method. Namely, a method for producing a catalyst wherein catalyst particles, each of which has a core/shell structure composed of a shell layer that is formed of platinum and a core particle that is covered by the shell layer and is formed of a metal other than platinum, are supported by a carrier. This method for producing a catalyst is characterized by comprising: an electrolysis step wherein the carrier supporting the core particles is electrolyzed in an electrolytic solution containing copper ions, so that copper is precipitated on the surfaces of the core particles; and a substitution reaction step wherein a platinum compound solution is brought into contact with the core particles, on which copper has been precipitated, so that the copper on the surface of each core particle is substituted by platinum, thereby forming a shell layer that is formed of platinum. This method for producing a catalyst is also characterized in that the platinum compound solution in the substitution reaction step contains citric acid.

Inventors:

MATSUTANI KOICHI (JP)
KAIEDA TAKESHI (JP)
AKIYAMA TOMOHIRO (JP)

Application Number:

PCT/JP2016/056353

Publication Date:

September 15, 2016

Filing Date:

March 02, 2016

Export Citation:

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Assignee:

TANAKA PRECIOUS METAL IND (JP)

International Classes:

B01J23/44; B01J37/02; H01M4/86; H01M4/88; H01M4/90; H01M4/92; H01M8/10

Foreign References:

JP2014229516A	2014-12-08
JP2014508038A	2014-04-03
JP2014213212A	2014-11-17
JP2015150511A	2015-08-24
JP2015205233A	2015-11-19
JP2015225064A	2015-12-14

Other References: