Title:
EXHAUST GAS PURIFICATION CATALYST
Document Type and Number:
Japanese Patent JPH0857324
Kind Code:
A
Abstract:
PURPOSE: To obtain a catalyst capable of reducing NOx contained in exhaust gas from an automobile even at a high temp. by carrying any one of indium and lanthanum on cobalt-zeolite.
CONSTITUTION: Cobalt and indium are carried by 2-4wt.% as a bent composition each on zeolite formed in a honeycomb structure or zeolite coating a honeycomb carrier by impregnating an aq. soln. of cobalt and indium salts into the zeolite or adopting an ion exchange method. The resultant cobalt-indium-zeolite is dried and fired at 500°C for 3hr in the air to obtain the objective exhaust gas purification catalyst.
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Inventors:
HARUFUJI SEIJI
Application Number:
JP21527994A
Publication Date:
March 05, 1996
Filing Date:
August 17, 1994
Export Citation:
Assignee:
HINO MOTORS LTD
International Classes:
F01N3/10; B01D53/86; B01D53/94; B01J29/064; B01J29/42; (IPC1-7): B01J29/064; B01D53/86; B01D53/94; B01J29/42; F01N3/10
Attorney, Agent or Firm:
Yamada Jiya