| US 7,381,394 B2 | ||
| Method for producing perovskite-type composite oxide | ||
| Hirohisa Tanaka, Shiga (Japan); and Kimiyoshi Kaneko, Kanagawa (Japan) | ||
| Assigned to Daihatsu Motor Co., Ltd., Osaka (Japan); and Hokko Chemical Industry Co. Ltd., Osaka (Japan) | ||
| Appl. No. 10/520,068 PCT Filed Jul. 03, 2003, PCT No. PCT/JP03/08438 § 371(c)(1), (2), (4) Date Jan. 05, 2005, PCT Pub. No. WO2004/005194, PCT Pub. Date Jan. 15, 2004. |
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| Claims priority of application No. 2002-200593 (JP), filed on Jul. 09, 2002. | ||
| Prior Publication US 2005/0249653 A1, Nov. 10, 2005 | ||
| Int. Cl. C01G 1/00 (2006.01) | ||
| U.S. Cl. 423—593.1 [423/594.1; 423/594.2; 423/594.3; 423/594.4; 423/594.5; 423/594.6; 423/595; 423/596; 423/598; 423/599; 423/600; 423/594.8; 423/594.12; 423/594.13; 423/594.14; 423/594.16; 423/263; 502/525] | 6 Claims |
| 1. A method for producing a perovskite-type composite oxide, which comprises the steps of:
preparing a precursor of the perovskite-type composite oxide by mixing an organometal, salt of a noble metal with another
elementary component constituting the perovskite-type composite oxide, and
heat-treating the precursor of the perovskite-type composite oxide;
wherein the perovskite-type composite oxide is a perovskite-type composite oxide represented by the following general formula
(1):
ABMO3 (1)
wherein A represents at least one element selected from the group consisting of rare-earth elements, alkaline earth metals,
and Ag; B represents at least one element selected from the group consisting of Al and transition metals excluding platinum
group elements and rare-earth elements; and M represents one or more platinum group elements.
|