Title:
METHOD FOR PRODUCING NOBLE METAL-CONTAINING HEAT-RESISTANT OXIDE
Document Type and Number:
WIPO Patent Application WO/2006/049137
Kind Code:
A1
Abstract:
Disclosed is a method for producing a noble metal-containing heat-resistant oxide which has excellent durability in high temperature atmospheres. In such a method for producing a noble metal-containing heat-resistant oxide, a primary precursor composition obtained by blending a coordination element material containing a coordination element is subjected to a primary heat treatment, thereby forming a primary heat-treated composition (crystal lattice) such as a perovskite complex oxide or a fluorite-type complex oxide. Next, a noble metal element material containing a noble metal element such as Pt, Rh, Pd or the like is blended in the primaryheat-treated composition, and then the thus-obtained secondary precursor composition is subjected to a secondary heat treatment (burning) at a temperature higher than the primary heat treatment temperature and not less than 600&ring C.
Inventors:
TANAKA HIROHISA (JP)
TAN ISAO (JP)
UENISHI MARI (JP)
TANIGUCHI MASASHI (JP)
TAN ISAO (JP)
UENISHI MARI (JP)
TANIGUCHI MASASHI (JP)
Application Number:
PCT/JP2005/020024
Publication Date:
May 11, 2006
Filing Date:
October 31, 2005
Export Citation:
Assignee:
DAIHATSU MOTOR CO LTD (JP)
TANAKA HIROHISA (JP)
TAN ISAO (JP)
UENISHI MARI (JP)
TANIGUCHI MASASHI (JP)
TANAKA HIROHISA (JP)
TAN ISAO (JP)
UENISHI MARI (JP)
TANIGUCHI MASASHI (JP)
International Classes:
C01G55/00; B01D53/94; B01J23/58; B01J23/63; B01J23/89; B01J37/08
Foreign References:
| JP2004043217A | 2004-02-12 | |||
| JP2004243305A | 2004-09-02 |
Attorney, Agent or Firm:
Okamoto, Hiroyuki (Sun Mullion NBF Tower 21st Floor, 6-12,
Minamihommachi 2-chome, Chuo-k, Osaka-shi Osaka 54, JP)
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