| US 7,601,325 B2 | ||
| Perovskite-type composite oxide, catalyst composition and method for producing perovskite-type composite oxide | ||
| Hirohisa Tanaka, Shiga (Japan); Isao Tan, Shiga (Japan); Mari Uenishi, Shiga (Japan); Nobuhiko Kajita, Shiga (Japan); Masashi Taniguchi, Shiga (Japan); Kimiyoshi Kaneko, Kanagawa (Japan); Senshu Mitachi, Kanagawa (Japan); Mareo Kimura, Shizuoka (Japan); Keiichi Narita, Shizuoka (Japan); and Noboru Sato, Shizuoka (Japan) | ||
| Assigned to Daihatsu Motor Co., Ltd., Osaka (Japan); Hokko Chemical Industry Co., Ltd., Tokyo (Japan); and Cataler Corporation, Shizuoka (Japan) | ||
| Appl. No. 10/593,827 PCT Filed Mar. 18, 2005, PCT No. PCT/JP2005/005599 § 371(c)(1), (2), (4) Date Sep. 22, 2006, PCT Pub. No. WO2005/090238, PCT Pub. Date Sep. 29, 2005. |
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| Claims priority of application No. 2004-081935 (JP), filed on Mar. 22, 2004. | ||
| Prior Publication US 2007/0213208 A1, Sep. 13, 2007 | ||
| Int. Cl. C01G 55/00 (2006.01); C01G 1/00 (2006.01); C01F 17/00 (2006.01); B01J 23/10 (2006.01); B01J 23/44 (2006.01) | ||
| U.S. Cl. 423—593.1 [423/594.1; 423/263; 502/302; 502/325] | 6 Claims |
| 1. A perovskite-type composite oxide represented by the following general formula (1):
AxB(1-y)PdyO3+δ (1)
wherein A represents at least one element selected from rare earth elements and alkaline earth metals; B represents at least
one element selected from transition elements (excluding rare earth elements, and Pd), A1 and Si; x represents an atomic ratio
satisfying the following condition: 1.02<x<1.5; y represents an atomic ratio satisfying the following condition: 0<y≤0.5;
and δ represents an oxygen excess.
|