Invention Grant
- Patent Title: Catalyst for nitrogen oxide removal
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Application No.: US14903152Application Date: 2014-07-08
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Publication No.: US09861961B2Publication Date: 2018-01-09
- Inventor: Takahiro Umeno , Masaya Hanzawa , Yoshiyuki Hayashi
- 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: JP2013-143029 20130708
- International Application: PCT/JP2014/068189 WO 20140708
- International Announcement: WO2015/005342 WO 20150115
- Main IPC: B01J23/10
- IPC: B01J23/10 ; B01J23/40 ; B01J23/42 ; B01J23/44 ; B01J23/46 ; B01J23/63 ; B01J21/04 ; B01D53/94 ; B01J37/02 ; B01J35/00 ; B01J35/04 ; B01J37/04 ; B01J37/08 ; B01J35/10

Abstract:
An exhaust gas purification method by which carbon monoxide (CO), hydrocarbon (HC), and nitrogen oxide (NOx), particularly NOx, which are hazardous components contained in an exhaust gas can be removed efficiently. The disclosure relates to a catalyst for exhaust gas purification including: a three-dimensional structure; and a catalyst component layer composed of one or more constituting layers on the three-dimensional structure, wherein the catalyst component layer contains (a) a noble metal-unsupported alumina having mesopores, (b) NOx storage material-supported cerium, (c) a refractory inorganic oxide, and (d) a noble metal, and the constituting layer of the uppermost surface among the one or more constituting layers contains (a) the noble metal-unsupported alumina and (b) the NOx storage material-supported cerium, a method for producing the same, and an exhaust gas purification method using the catalyst.
Public/Granted literature
- US20160184803A1 CATALYST FOR NITROGEN OXIDE REMOVAL Public/Granted day:2016-06-30
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