CATALYST FOR PURIFYING EXHAUST GAS

Title:

CATALYST FOR PURIFYING EXHAUST GAS

Document Type and Number:

Japanese Patent JPS59156434

Kind Code:

A

Abstract:

PURPOSE: To prevent a sintering phenomenon and to hold catalytic activity, by interposing composite oxide consisting of zirconium oxide and alkaline earth metal oxide in an activated alumina layer.

CONSTITUTION: At least one of composite metal oxides among (1-X)ZrO2 XLn2O3 (wherein Ln is Sc, Y or La and X is 0.005W0.1) and (1-X)ZrO2 XRO (wherein R is Be, Mg, Ca, Sr or Ba and X is 0.005W0.1) is allowed to be present in an activated alumina layer along with a catalyst substance. As the catalyst substance, a Pt/Rh catalyst containing platinum and rhodium as catalytic components is used.

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Inventors:

SAKURAI SHIGENORI
MATSUMOTO SHINICHI
YOSHIDA KAZUKO

Application Number:

JP3062983A

Publication Date:

September 05, 1984

Filing Date:

February 25, 1983

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD

International Classes:

B01D53/94; B01J21/06; B01J23/02; B01J23/10; B01J23/40; B01J23/56; B01J23/58; B01J23/63; (IPC1-7): B01D53/36; B01J21/06; B01J23/02; B01J23/10; B01J23/40; B01J23/56; B01J23/58

Domestic Patent References:

JPS5090590A	1975-07-19
JPS5229486A	1977-03-05

Attorney, Agent or Firm:

Watanabe

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