发明授权
US07931874B2 Three-layered catalyst system for purifying exhaust gases of internal engines
有权
用于净化内部发动机废气的三层催化剂系统
- 专利标题： Three-layered catalyst system for purifying exhaust gases of internal engines
- 专利标题（中）： 用于净化内部发动机废气的三层催化剂系统
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申请号： US11895511申请日： 2007-08-24
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公开(公告)号： US07931874B2公开(公告)日： 2011-04-26
- 发明人: Hyun-Sik Han , Tae-Woo Lee , Eun-Seok Kim
- 申请人： Hyun-Sik Han , Tae-Woo Lee , Eun-Seok Kim
- 申请人地址： KR Shiheung, Kyungki-do
- 专利权人： Heesung Catalysts Corporation
- 当前专利权人： Heesung Catalysts Corporation
- 当前专利权人地址： KR Shiheung, Kyungki-do
- 代理机构： Ohlandt, Greeley, Ruggiero & Perle, L.L.P.
- 优先权： KR10-2006-0081656 20060828
- 主分类号： B01D50/00
- IPC分类号： B01D50/00 ; B01J23/40 ; B32B15/00
摘要：
Herein is a three-layered catalyst system in which layers including predetermined precious metal components are sequentially layered on a substrate, and thus the conversion ratio of HC and CO is increased, thereby improving purification efficiency. The three-layered catalyst system includes a substrate, a lower layer containing a precious metal component of only platinum, an intermediate layer containing a precious metal component of only palladium, and an upper layer containing a precious metal component of only platinum, all of which are sequentially layered.