Title:
INTERNAL COMBUSTION ENGINE EXHAUST GAS PURIFYING CATALYST AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JPH1170332
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an internal combustion exhaust gas purifying catalyst of higher activities and temperature change stability compared with well-known catalysts. SOLUTION: A catalyst is provided with two catalyst activity layers on a substrate, and a first layer contains several fine solids, one or more of highly dispersible alkali earth metal oxide and at least one platinum group metal, and fine solids are provided with at least one fine oxygen storage material and at least another fine component, and the platinum group metal is brought into contact closely with all the components in the first layer.
Inventors:
LINDNER DIETER DR
VAN YPEREN RENEE DR
MUSSMANN LOTHAR DR
LOX EGBERT DR
KREUZER THOMAS DR
VAN YPEREN RENEE DR
MUSSMANN LOTHAR DR
LOX EGBERT DR
KREUZER THOMAS DR
Application Number:
JP17112898A
Publication Date:
March 16, 1999
Filing Date:
June 18, 1998
Export Citation:
Assignee:
DEGUSSA
International Classes:
F01N3/10; B01D53/94; B01J21/16; B01J23/40; B01J23/42; B01J23/46; B01J23/58; B01J23/63; B01J37/02; F01N3/28; (IPC1-7): B01J23/58; B01D53/94; B01J21/16; B01J23/40; B01J23/42; B01J23/46; F01N3/10; F01N3/28
Domestic Patent References:
| JPH09500570A | 1997-01-21 | |||
| JPH08168675A | 1996-07-02 |
Attorney, Agent or Firm:
Toshio Yano (3 outside)