EXHAUST GAS CLEANING CATALYST, MANUFACTURING METHOD THEREFOR AND EXHAUST GAS CLEANING CATALYST APPARATUS FOR VEHICLE

Title:

EXHAUST GAS CLEANING CATALYST, MANUFACTURING METHOD THEREFOR AND EXHAUST GAS CLEANING CATALYST APPARATUS FOR VEHICLE

Document Type and Number:

Japanese Patent JP3843091

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To produce an exhaust gas cleaning catalyst capable of exhibiting excellent cleaning characteristics, obtained by calcinating a composite oxide having the same amount of a noble metal as the conventional ones at low temperature and thereby preventing reduction of Pd dispersion due to advancement of crystalization, and a manufacturing method therefor.
SOLUTION: The Pd based composite oxide contains at least one kind selected from rare-earth metals. In the exhaust gas cleaning catalyst, the Pd based composite oxide contains Ln2PdO4 and Ln4PdO7 (Ln: a rare-earth metal).

Inventors:

Norihiko Suzuki
Yuichi Matsuo
Kiguchi Kazunori

Application Number:

JP2003322754A

Publication Date:

November 08, 2006

Filing Date:

September 16, 2003

Export Citation:

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Assignee:

Honda motor industry stock company

International Classes:

B01J23/63; F01N3/10; B01D53/94; B01J23/00; B01J37/00; B01J37/08; B01J37/02; (IPC1-7): B01J23/63; B01D53/94; F01N3/10

Domestic Patent References:

JP3068451A
JP6100319A
JP6246155A
JP61209045A
JP6134308A
JP4027433A

Attorney, Agent or Firm:

Suenari Mikio

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