CATALYST CARRIER POWDER AND EXHAUST GAS PURIFICATION CATALYST

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.

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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

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