Exhaust gas purification catalyst for internal combustion

Details Exhaust gas purification catalyst for internal combustion Exhaust gas purification catalyst for internal combustion

2005-04-05

2005-04-05

Tran, Hien (Department: 1764)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

C422S177000, C502S304000, C502S326000, C502S327000

Reexamination Certificate

active

06875408

ABSTRACT:
An object of the present invention is to provide an exhaust gas purification catalyst which can minimize the separation of the catalyst layer due to heat and vibration, can suppress thermal deterioration of the catalytic substance, and can exhibit excellent purification capabilities under severe conditions. Specifically, the present invention relates to an exhaust gas purification catalyst wherein an undercoat layer comprising a heat-resistant inorganic oxide having an oxygen-absorbing substance added thereto is formed on a surface of a metallic carrier, and a catalyst-carrying layer is formed on the undercoat layer.

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patent: 6090744 (2000-07-01), Koda et al.
patent: 6596243 (2003-07-01), Fujii et al.
patent: 197 13 103 (1997-10-01), None
patent: 813899 (1997-12-01), None
patent: 3-157143 (1991-07-01), None
patent: 10-5603 (1998-01-01), None

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