Invention Grant
US09433927B2 Exhaust gas purification catalyst and exhaust gas purification method using said catalyst
有权
使用所述催化剂的废气净化催化剂和废气净化方法
- Patent Title: Exhaust gas purification catalyst and exhaust gas purification method using said catalyst
- Patent Title (中): 使用所述催化剂的废气净化催化剂和废气净化方法
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Application No.: US14764350Application Date: 2014-01-31
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Publication No.: US09433927B2Publication Date: 2016-09-06
- Inventor: Masanori Ikeda , Kazuyoshi Komata , Shigekazu Minami , Yuji Ogino , Hideki Goto
- Applicant: UMICORE SHOKUBAI JAPAN CO., LTD.
- Applicant Address: JP Aichi
- Assignee: UMICORE SHOKUBAI JAPAN CO., LTD.
- Current Assignee: UMICORE SHOKUBAI JAPAN CO., LTD.
- Current Assignee Address: JP Aichi
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: JP2013-017202 20130131
- International Application: PCT/JP2014/052323 WO 20140131
- International Announcement: WO2014/119749 WO 20140807
- Main IPC: B01D53/56
- IPC: B01D53/56 ; B01D53/94 ; B01J8/02 ; B01J23/00 ; B01J23/02 ; B01J23/10 ; B01J23/40 ; B01J23/42 ; B01J23/44 ; B01J23/56 ; B01J21/04 ; B01J23/63 ; B01J37/02 ; B01J35/00

Abstract:
As a way to suppress deterioration of catalytic performance in an exhaust gas purification catalyst even after being exposed to an exhaust gas containing a phosphorus compound, an exhaust gas purification catalyst is provided. The catalyst purifies an exhaust gas containing a phosphorus compound, and the catalyst includes a catalyst layer containing rhodium (Rh), palladium (Pd), and either a ceria-zirconia-lanthana complex oxide or a ceria-zirconia-lanthana-yttria complex oxide as catalyst active components. Further, an average value of distances between Rh particles and the nearest Pd particles of the Rh and the Pd is within 4000 nm, a weight ratio of the Pd to the Rh is from 0.2 to 4.9, and a content rate of yttria in the ceria-zirconia-lanthana-yttria complex oxide is 19% by weight or less.
Public/Granted literature
- US20150367328A1 EXHAUST GAS PURIFICATION CATALYST AND EXHAUST GAS PURIFICATION METHOD USING SAID CATALYST Public/Granted day:2015-12-24
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