CATALYST FOR PURIFYING EXHAUST GAS

Title:

CATALYST FOR PURIFYING EXHAUST GAS

Document Type and Number:

Japanese Patent JPH0788379

Kind Code:

A

Abstract:

PURPOSE: To obtain a catalyst having superior heat resistance and catalytic activity by carrying a specified catalytic element on modified zeolite having a specified rate of Al removal and a specified molar ratio of SiO2 to Al2O3.

CONSTITUTION: Unmodified zeolite is subjected to Al removal treatment at 10-25% rate of Al removal to regulate the molar ratio of SiO2 to Al2O3 to 30-80 and to obtain heat resistant modified zeolite. A catalytic element made of at least one of at least one kind of metal selected from among Cu, Co, Fe and Pt and oxide of the metal is carried on the modified zeolite by 1-10wt.% to produce the objective catalyst having superior heat resistance and catalytic activity.

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Inventors:

SATO NAOHIRO
TERADA KAZUHIDE
FUJISAWA YOSHIKAZU

Application Number:

JP23830993A

Publication Date:

April 04, 1995

Filing Date:

September 24, 1993

Export Citation:

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Assignee:

HONDA MOTOR CO LTD

International Classes:

B01D53/86; B01D53/94; B01J29/46; (IPC1-7): B01J29/46; B01D53/86; B01D53/94

Attorney, Agent or Firm:

Ken Ochiai (1 person outside)

Next Patent: CATALYST FOR PHOTODEGRADATION OF WATER AND PRODUCTION OF HYDROGEN BY USING THE SAME