Title:
EXHAUST GAS CLEANING CATALYST
Document Type and Number:
Japanese Patent JP2004082000
Kind Code:
A
Abstract:
To provide an exhaust gas cleaning catalyst having excellent combustion/removal ability for a hydrocarbon-based compound contained in an exhaust gas discharged from an internal combustion engine such as an automobile engine.
The exhaust gas cleaning catalyst is constituted so that multiple metal colloid having a center part composed of a noble metal and a surface part composed of a transition metal except the noble metal is supported on a porous metal oxide support. It is preferable that the noble metal is at least one kind selected from among Pt, Pd and Rh and the transition metal is at least one kind selected from among Fe, Mn and Ce.
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Inventors:
YAMATO MASANORI
HIRATA HIROTO
HIRATA HIROTO
Application Number:
JP2002247350A
Publication Date:
March 18, 2004
Filing Date:
August 27, 2002
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
B01D53/94; B01J23/63; B01J23/656; B01J23/89; (IPC1-7): B01J23/656; B01D53/94; B01J23/63; B01J23/89
Attorney, Agent or Firm:
Takashi Ishida
Jun Tsuruta
Takashi Watanabe
Masaya Nishiyama
Jun Tsuruta
Takashi Watanabe
Masaya Nishiyama