发明授权
- 专利标题： Exhaust gas purification catalyst and production method thereof
- 专利标题（中）： 废气净化催化剂及其制备方法
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申请号： US14430514申请日： 2014-04-22
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公开(公告)号： US09550176B2公开(公告)日： 2017-01-24
- 发明人: Yoshiyuki Sato , Hiroshi Yamada , Koichiro Harada , Takashi Baba , Masahiko Shigetsu , Akihide Takami
- 申请人： MAZDA MOTOR CORPORATION
- 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： Studebaker & Brackett PC
- 优先权： JP2013-111023 20130527
- 国际申请： PCT/JP2014/002268 WO 20140422
- 国际公布： WO2014/192219 WO 20141204
- 主分类号： B01J29/068
- IPC分类号： B01J29/068 ; B01J37/02 ; B01J23/63 ; B01J35/00 ; B01D53/94 ; B01J37/08 ; F01N3/28 ; B01J29/74 ; B01J37/03 ; F01N3/10 ; B01J35/04
摘要：
This catalyst includes a lower catalytic layer 2 having catalytic ability to oxidize HC and CO and an upper catalytic layer 3 having catalytic ability to reduce NOx. The lower catalytic layer 2 contains Pt and Pd acting as catalytic metals, zeolite, a Ce-containing oxide, and activated alumina, and the upper catalytic layer 3 contains activated alumina loading an Rh-doped Ce-containing oxide and an NOx storage material.
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