Invention Grant
- Patent Title: Catalyst for purifying exhaust gas from internal combustion engine and process for purifying exhaust gas using the same
- Patent Title (中): 用于净化来自内燃机的废气的催化剂和使用其的净化废气的方法
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Application No.: US12922708Application Date: 2009-03-13
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Publication No.: US08771624B2Publication Date: 2014-07-08
- Inventor: Masanori Ikeda , Hideki Goto , Kosuke Mikita
- Applicant: Masanori Ikeda , Hideki Goto , Kosuke Mikita
- Applicant Address: JP Osaka US MI Auburn Hills
- Assignee: Umicore Shokubai Japan Co., Ltd,Umicore Shokubai USA Inc.
- Current Assignee: Umicore Shokubai Japan Co., Ltd,Umicore Shokubai USA Inc.
- Current Assignee Address: JP Osaka US MI Auburn Hills
- Agency: Cesari and McKenna, LLP
- Priority: JP2008-071867 20080319
- International Application: PCT/JP2009/054917 WO 20090313
- International Announcement: WO2009/116468 WO 20090924
- Main IPC: B01D53/56
- IPC: B01D53/56 ; B01D53/94 ; B01J8/02 ; C01B21/00 ; C01B23/00 ; C01B25/00 ; C01B31/00 ; C01B33/00 ; C01B35/00 ; C01G28/00 ; C01G30/00 ; B01J29/06 ; B01J29/18 ; B01J20/00 ; B01J21/00 ; B01J21/04 ; B01J23/00 ; B01J23/02 ; B01J23/06 ; B01J23/08 ; B01J23/10 ; B01J23/40 ; B01J23/42 ; B01J23/44 ; B01J23/58 ; B01J23/63 ; B01J37/02 ; F01N3/28 ; B01J37/00
Abstract:
An Object of the patent is to remove highly reducing hydrocarbon exhausted during acceleration period, and to remove efficiently hydrocarbon even after contacting with highly reducing hydrocarbon. By using a catalyst having a higher proportion of palladium having surface charge of 2-valence or 4-valence supported than that of 0-valence by supporting palladium together with magnesium oxide, hydrocarbon exhausted from an internal combustion engine especially during acceleration period can be efficiently removed.
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