Title:
【発明の名称】自動車排ガス浄化用触媒
Document Type and Number:
Japanese Patent JP3327574
Kind Code:
B2
Abstract:
PURPOSE:To prevent the lowering of catalytic capacity caused by the release of the coating layer on metal foil by a method wherein the first coating layer provided only to the part exposed to high temp. of a metal honeycomb carrier is constituted of a specific alumina layer or a thick alumina layer and an alumina layer containing a specific catalyst component is applied to the carrier on which the coating layer is formed. CONSTITUTION:A catalyst for purifying exhaust gas of a car is a metal honeycomb carrier catalyst and the first coating layer being in contact with the base material of a metal honeycomb carrier 1 only at the part 2 exposed to high temp. thereof is constituted of an alumina layer containing alkali metal and/or alkaline earth metal or a thick alumina layer containing the same metal. Further, an alumina layer containing at least one kind of a catalyst component selected from platinum, palladium, rhodium, cerium, lanthanum, zirconium, nickel, iron and barrium is applied to the carrier having the coating layer formed thereon.
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Inventors:
Hironori Sato
Akimasa Hirai
Toshihiro Takada
Akimasa Hirai
Toshihiro Takada
Application Number:
JP10940692A
Publication Date:
September 24, 2002
Filing Date:
April 28, 1992
Export Citation:
Assignee:
Cataler Co., Ltd.
TOYOTA JIDOSHA KABUSHIKI KAISHA
Toyota Central R & D Labs.
TOYOTA JIDOSHA KABUSHIKI KAISHA
Toyota Central R & D Labs.
International Classes:
B01J23/58; B01J23/78; B01J35/04; B01D53/94; (IPC1-7): B01J35/04; B01D53/94; B01J23/58
Domestic Patent References:
| JP2194842A | ||||
| JP338250A | ||||
| JP4265155A |
Attorney, Agent or Firm:
Takehiko Suzue