Invention Grant
- Patent Title: Exhaust gas purification catalyst for internal combustion engine, and exhaust gas purifying method using exhaust gas purification catalyst
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Application No.: US16318424Application Date: 2017-07-20
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Publication No.: US10654030B2Publication Date: 2020-05-19
- Inventor: Kazuyoshi Komata , Hirotaka Kuno , Yuzo Hamada , Masashi Nakashima , Yuji Ogino , Masanori Ikeda
- Applicant: Umicore Shokubai Japan Co., Ltd.
- Applicant Address: JP Tokoname-Shi, Aichi
- Assignee: UMICORE SHOKUBAI JAPAN CO., LTD.
- Current Assignee: UMICORE SHOKUBAI JAPAN CO., LTD.
- Current Assignee Address: JP Tokoname-Shi, Aichi
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@302379d2
- International Application: PCT/JP2017/026354 WO 20170720
- International Announcement: WO2018/016606 WO 20180125
- Main IPC: F01N3/28
- IPC: F01N3/28 ; B01J23/63 ; B01D53/94 ; B01J21/04 ; B01J23/44 ; B01J23/46 ; B01J35/00 ; B01J37/02 ; B01J37/03 ; B01J37/10 ; F01N3/10

Abstract:
The present invention provides exhaust gas purification catalyst for an internal combustion engine, and exhaust gas purification method using the catalyst. The present invention provides the exhaust gas purification catalyst including a support, a first catalyst layer on an upstream side, a second catalyst layer on a downstream side, and a third catalyst layer. In the exhaust gas purification catalyst, the upstream portion of the third catalyst layer is present on the first catalyst layer, the downstream portion of the third catalyst layer is present on the second catalyst layer, and in the middle portion between the upstream portion and the downstream portion of the third catalyst layer is present between the first catalyst layer and the second catalyst layer.
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