发明授权
- 专利标题： Exhaust gas purification catalyst and oxygen storage component for the same
- 专利标题（中）： 废气净化催化剂和储氧组分相同
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申请号： US11200305申请日： 2005-08-10
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公开(公告)号： US07307039B2公开(公告)日： 2007-12-11
- 发明人: Hideharu Iwakuni , Asako Sadai , Masaaki Akamine , Seiji Miyoshi , Hiroshi Yamada , Akihide Takami
- 申请人： Hideharu Iwakuni , Asako Sadai , Masaaki Akamine , Seiji Miyoshi , Hiroshi Yamada , Akihide Takami
- 申请人地址： JP Hiroshima
- 专利权人： Mazda Motor Corporation
- 当前专利权人： Mazda Motor Corporation
- 当前专利权人地址： JP Hiroshima
- 代理机构： Nixon Peabody LLP
- 代理商 Donald R. Studebaker
- 优先权： JP2004-257249 20040903; JP2004-351154 20041203
- 主分类号： B01J23/10
- IPC分类号： B01J23/10 ; B01J23/00 ; B01J21/00
摘要：
In 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 CeO2/ZrO2 mass ratio of 1.4 or more and the ratio of Nd2O3/(CeO2+ZrO2+Nd2O3) in the mixed oxide is 20 mass % or less.
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