Invention Grant
- Patent Title: Exhaust gas purifying catalyst
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Application No.: US16086865Application Date: 2017-03-13
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Publication No.: US10737219B2Publication Date: 2020-08-11
- Inventor: Takashi Onozuka , Kenichi Taki , Kyosuke Murakami
- Applicant: CATALER CORPORATION
- Applicant Address: JP Shizuoka
- Assignee: Cataler Corporation
- Current Assignee: Cataler Corporation
- Current Assignee Address: JP Shizuoka
- Agency: Occhiuti & Rohlicek LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@3d07d3b6
- International Application: PCT/JP2017/010012 WO 20170313
- International Announcement: WO2017/163985 WO 20170928
- Main IPC: B01D53/94
- IPC: B01D53/94 ; B01J35/04 ; F01N3/28 ; B01J37/02 ; B01J23/63 ; F01N3/10 ; B01J23/44 ; B01J23/46 ; B01J23/10 ; B01J35/00

Abstract:
An exhaust gas purifying catalyst according to the present invention is provided with a base material 10 and a catalyst-coated layer 30. The catalyst-coated layer 30 is provided with a lower layer 34 and an upper layer 32. The upper layer 32 contains Rh and/or Pt as a noble metal catalyst. The lower layer 34 contains Pd as a noble metal catalyst. The lower layer 34 is provided with a front-stage lower layer 34a positioned on an upstream side and a rear-stage lower layer 34b positioned on a downstream side. The front-stage lower layer 34a is a Ce-free layer that does not contain a Ce-containing oxide. The rear-stage lower layer 34b is a Ce-containing layer that contains a Ce-containing oxide with a pyrochlore structure.
Public/Granted literature
- US20190083932A1 EXHAUST GAS PURIFYING CATALYST Public/Granted day:2019-03-21
Information query
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