エンジン排ガス浄化用触媒 - Japan Science and Technology Agency

Title:

エンジン排ガス浄化用触媒

Document Type and Number:

Japanese Patent JP4057811

Kind Code:

B2

Abstract:

To provide a catalyst for purifying an engine exhaust gas in which particulate matter in the engine exhaust gas is burned at a lower temperature compared with a conventional catalyst.

The catalyst for purifying the engine exhaust gas comprises including C12A7as a major component, being characterized in that C12A7contains an oxygen radical of 1020/cm3or more, carrying a metallic component and that the metallic component is composed of one or more kinds selected from the group consisting of gold, silver, copper, iron, zinc, manganese, cerium and an element of a platinum group.

Inventors:

Hideo Hosono
Katsuro Hayashi
Masahiro Hirano
Kei Isozaki
Satoshi Tanaka
Fukumoto Takeshi
Kokusho Komori
Chihiro Abe

Application Number:

JP2001399571A

Publication Date:

March 05, 2008

Filing Date:

December 28, 2001

Export Citation:

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Assignee:

Japan Science and Technology Agency
DENKI KAGAKU KOGYO KABUSHIKI KAISHA
JGC Chemical Co., Ltd.
Futaba Sangyo Co., Ltd.

International Classes:

B01D53/94; B01J23/06; B01J23/02; B01J23/10; B01J23/34; B01J23/42; B01J23/44; B01J23/46; B01J23/50; B01J23/52; B01J23/72; B01J23/745; B01J23/89

Domestic Patent References:

JP2683265B2
JP3560580B2
JP3531868B2
JP7291875A
JP3389412B2
JP2740800B2

Other References:

細野秀雄,幻の化学種“超酸化物イオンラジカル”を高濃度に包接する結晶:12CaO・7Al2O3,材料科学,1996年,Vol.33,No.4,page171,172
JOURNAL OF SOLID STATE CHEMISTRY,1989年,Vol.81,page.152-164

Attorney, Agent or Firm:

Tetsuya Ito

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