Exhaust gas purification catalyst and oxygen storage component for the same

22 232223In an exhaust gas purification catalyst comprising a honeycomb support and a catalytic layer that is formed on wall surfaces of each cell of the honeycomb support and contains active alumina and a mixed oxide containing Ce, Zr and Nd and doped with catalytic precious metal, the mixed oxide...

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Main Authors Iwakuni, Hideharu, Sadai, Asako, Akamine, Masaaki, Miyoshi, Seiji, Yamada, Hiroshi, Takami, Akihide
Format Patent
LanguageEnglish
Published 11.12.2007
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Summary:22 232223In an exhaust gas purification catalyst comprising a honeycomb support and a catalytic layer that is formed on wall surfaces of each cell of the honeycomb support and contains active alumina and a mixed oxide containing Ce, Zr and Nd and doped with catalytic precious metal, the mixed oxide has a CeO/ZrOmass ratio of 1.4 or more and the ratio of NdO/(CeO+ZrO+NdO) in the mixed oxide is 20 mass % or less.