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Patent Searching and Data


Title:
CATALYST CARRIER POWDER AND EXHAUST GAS PURIFICATION CATALYST
Document Type and Number:
Japanese Patent JP2006263550
Kind Code:
A
Abstract:

To provide an exhaust gas purification catalyst having an excellent exhaust gas purification capacity even after being used at a high temperature, and a catalyst carrier powder therefor.

The catalyst carrier powder 3 contains ceria and zirconia and is characterized in that the molar ratio (%) of ceria on the surface of the carrier powder measured by an X-ray photoelectron spectroscopy is 1.0-1.5 with respect to the molar ratio (%) of ceria in a raw material. The exhaust gas purification catalyst 5 is obtained by supporting platinum 4 on the catalyst carrier powder 3.


Inventors:
MIURA MASAHIDE
KUNO HISASHI
Application Number:
JP2005084049A
Publication Date:
October 05, 2006
Filing Date:
March 23, 2005
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
B01J23/10; B01D53/94; B01J23/63; B01J32/00; F01N3/10
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Nobuo Sekine
Masaya Nishiyama