发明授权
- 专利标题： Exhaust gas purification catalytic material and method for fabricating the same
- 专利标题（中）： 废气净化催化材料及其制造方法
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申请号： US10985773申请日： 2004-11-10
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公开(公告)号： US07341975B2公开(公告)日： 2008-03-11
- 发明人: Hideharu Iwakuni , Masaaki Akamine , Seiji Miyoshi , Hiroshi Yamada , Akihide Takami , Yuki Murakami
- 申请人： Hideharu Iwakuni , Masaaki Akamine , Seiji Miyoshi , Hiroshi Yamada , Akihide Takami , Yuki Murakami
- 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： Brooks Kushman P.C.
- 优先权： JP2003-401182 20031201
- 主分类号： B01J23/40
- IPC分类号： B01J23/40 ; B01J23/42 ; B01J23/44 ; B01J23/00
摘要：
The present invention relates to an exhaust gas purification catalytic material containing: (a) a mixed oxide containing Ce and Zr for storing and releasing oxygen; and (b) a precious metal catalyst made of one or more kinds of precious metals. The precious metal catalyst comprises a first precious metal catalyst component placed between atoms, at crystal lattice points and/or at oxygen defect sites of the mixed oxide and a second precious metal catalyst component loaded on the surface of the mixed oxide, thereby improving the thermal resistance, oxygen storage capacity and exhaust gas conversion performance of the catalytic material.