Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Reexamination Certificate
2005-03-18
2009-10-13
Nguyen, Ngoc-Yen M (Department: 1793)
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
C423S594100, C423S263000, C502S302000, C502S325000
Reexamination Certificate
active
07601325
ABSTRACT:
To provide a perovskite-type composite oxide which has stable quality in which a solid solution of Pd is formed at a high rate, a method for producing the perovskite-type composite oxide, and a catalyst composition containing the perovskite-type composite oxide, the perovskite-type composite oxide is produced by formulating materials in accordance with each atomic ratio of a perovskite-type composite oxide represented by the following general formula (1):in-line-formulae description="In-line Formulae" end="lead"?AxB(1-y)PdyO3+δ (1)in-line-formulae description="In-line Formulae" end="tail"?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), Al and Si; x represents an atomic ratio satisfying the following condition: 1<x; y represents an atomic ratio satisfying the following condition: 0<y≦0.5; and δ represents an oxygen excess.
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Kajita Nobuhiko
Kaneko Kimiyoshi
Kimura Mareo
Mitachi Senshu
Narita Keiichi
Akerman & Senterfitt
Cataler Corporation
Daihatsu Motor Co. Ltd.
Edwards, Esq. Jean C.
Hokko Chemical Industry Co. Ltd.
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