发明授权
- 专利标题： Catalyst for purifying exhaust gas
- 专利标题（中）： 废气净化催化剂
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申请号： US12373926申请日： 2007-07-20
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公开(公告)号： US07846865B2公开(公告)日： 2010-12-07
- 发明人: Masanori Yamato , Oji Kuno
- 申请人： Masanori Yamato , Oji Kuno
- 申请人地址： JP Toyota-shi, Aichi-ken
- 专利权人： Toyota Jidosha Kabushiki Kaisha
- 当前专利权人： Toyota Jidosha Kabushiki Kaisha
- 当前专利权人地址： JP Toyota-shi, Aichi-ken
- 代理机构： Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
- 优先权： JP2006-198471 20060720
- 国际申请： PCT/JP2007/064358 WO 20070720
- 国际公布： WO2008/010576 WO 20080124
- 主分类号： B01J23/00
- IPC分类号： B01J23/00 ; B01J21/00 ; B01J20/00
摘要：
In the present invention, it is an assignment to optimize a loading density of noble metal on catalyst.Pt is loaded in such an amount that a loading amount per 1 liter of a support substrate exceeds 0.75 g on an exhaust-gas upstream side of a coating layer, and a loading density of Rh in the coating layer is made so that it becomes higher on an exhaust-gas downstream side than on the exhaust-gas upstream side. The purifying performance after warming up improves by loading Rh with high density on the exhaust-gas downstream side that is likely to become rich atmosphere.
公开/授权文献
- US20090197764A1 CATALYST FOR PURIFYING EXHAUST GAS 公开/授权日：2009-08-06
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