Invention Grant
- Patent Title: Complex oxide for exhaust gas purification catalyst, production method thereof, coating material for exhaust gas purification catalyst, and diesel exhaust gas purification filter
- Patent Title (中): 用于废气净化催化剂的复合氧化物，其制备方法，废气净化催化剂用涂料和柴油机废气净化过滤器
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Application No.: US12935701Application Date: 2009-04-21
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Publication No.: US08304364B2Publication Date: 2012-11-06
- Inventor: Yoshiyuki Michiaki , Yoshichika Horikawa
- Applicant: Yoshiyuki Michiaki , Yoshichika Horikawa
- Applicant Address: JP Tokyo
- Assignee: Dowa Electronics Materials Co., Ltd.
- Current Assignee: Dowa Electronics Materials Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Greenblum and Bernstein, P.L.C.
- Priority: JP2008-112434 20080423
- International Application: PCT/JP2009/057915 WO 20090421
- International Announcement: WO2009/131118 WO 20091029
- Main IPC: B01J23/10
- IPC: B01J23/10 ; B01J23/00 ; B01J23/08 ; B01J8/02 ; B01J8/00 ; B01D53/56 ; B01D53/94 ; B01D53/86 ; C01B21/00 ; C01B23/00 ; C01B25/00 ; C01B31/00 ; C01B33/00 ; C01B35/00 ; C01G28/00 ; C01G30/00
Abstract:
An oxidation catalyst is provided which is capable of combusting PM in a diesel engine exhaust gas at a low temperature and which has low degradation due to heat generated during combustion (i.e., has high heat resistance).A composite oxide for an exhaust gas purification catalyst is formed from Ce, Bi, R, R′, and oxygen, and when the molar ratios of Ce, Bi, R, and R′ are expressed as Ce:Bi:R:R′=(1−x−y−z) :x:y:z, it satisfies 0
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