Title:
排ガス浄化用貴金属担持触媒の製造方法
Document Type and Number:
Japanese Patent JP6512911
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a noble metal-supported catalyst for exhaust gas purification capable of suppressing grain growth of a catalyst metal even under a severe use environment and obtaining high catalyst activity life.SOLUTION: There is provided a method for producing a noble metal-supported catalyst for exhaust gas purification which comprises: a first step of dispersing ceramic substrate particles in a solvent having reducibility to prepare a complexed reaction solution in which a noble metal salt is dissolved; a second step of heating the complexed reaction solution by microwave irradiation to reduce the noble metal ions and supporting the reduced noble metal fine particles on the ceramic substrate particles; and a third step of removing the solvent, and further, as necessary, comprises a fourth step of forming an oxide coating film on the surface of the ceramic substrate particles by the surface precipitation treatment.SELECTED DRAWING: Figure 1
Inventors:
Tomoharu Ito
Taiji Shinkai
Shuji Inoue
Katsuhiro Yamada
Kono Takumi
Taiji Shinkai
Shuji Inoue
Katsuhiro Yamada
Kono Takumi
Application Number:
JP2015080916A
Publication Date:
May 15, 2019
Filing Date:
April 10, 2015
Export Citation:
Assignee:
Shin Nippon Electric Co., Ltd.
International Classes:
B01J37/34; B01D53/94; B01J23/42; B01J23/44; B01J23/63; B01J37/02; B01J37/08; B01J37/16
Domestic Patent References:
| JP2011136993A | ||||
| JP2002273239A | ||||
| JP2003013105A | ||||
| JP2016163879A | ||||
| JP2016179427A | ||||
| JP2013013864A |
Foreign References:
| US20070244003 |
Attorney, Agent or Firm:
Hisataka Tanaka
Shunta Naito
Shunta Naito