Title:
CATALYST FOR DECONTAMINATING EXHAUST GAS
Document Type and Number:
Japanese Patent JP3343961
Kind Code:
B2
Abstract:
PURPOSE: To develop a catalyst for decontaminating exhaust gas by making a catalytic active species carried on oxide powder having the crystalline structure of β-alumina structure or magnetoplumbite structure wherein the catalytic active species causes particle growth and decontamination ratio is not deteriorated even when the catalyst is used for purification of exhaust gas at the comparatively high temperature i.e., 600°C or higher.
CONSTITUTION: A catalyst for decontaminating exhaust gas is produced by making a catalytic active species carried on oxide powder having the crystalline structure of β-alumina structure or magnetoplumbite structure. In the catalyst, at least one part of a cation (i.e., alkali metal, alkaline earth metal, rare earth metallic element) existing on the surface of oxide powder having the crystalline structure of β-alumina structure or magnetoplumbite structure is substituted by the catalytic active species.
Inventors:
Norio Taguchi
Mikio Murachi
Mikio Murachi
Application Number:
JP29428992A
Publication Date:
November 11, 2002
Filing Date:
November 02, 1992
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
B01D53/86; B01J23/04; B01J23/58; B01J23/78; B01J23/89; B01D53/94; (IPC1-7): B01J23/58; B01D53/94; B01J23/04; B01J23/78; B01J23/89
Domestic Patent References:
| JP278438A | ||||
| JP2126939A | ||||
| JP4197449A |
Attorney, Agent or Firm:
Aoki Akira (3 outside)
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