- 专利标题： Exhaust gas purifying catalyst
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申请号： US15534841申请日： 2015-12-11
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公开(公告)号： US10322406B2公开(公告)日： 2019-06-18
- 发明人: Hiromasa Suzuki , Takeru Yoshida , Masahide Miura , Yuki Aoki , Isao Chinzei , Yoshinori Saito , Daisuke Ochiai , Mitsuyoshi Okada , Toshitaka Tanabe , Akihiko Suda , Masanao Sato , Akiya Chiba , Akira Morikawa , Hirotaka Ori
- 申请人： Hiromasa Suzuki , Takeru Yoshida , Masahide Miura , Yuki Aoki , Isao Chinzei , Yoshinori Saito , Daisuke Ochiai , Mitsuyoshi Okada , Toshitaka Tanabe , Akihiko Suda , Masanao Sato , Akiya Chiba , Akira Morikawa , Hirotaka Ori
- 申请人地址： JP Toyoto-shi, Aichi-ken JP Kakegawa-shi, Shizuoka
- 专利权人： TOYOTA JIDOSHA KABUSHIKI KAISHA,CATALER CORPORATION
- 当前专利权人： TOYOTA JIDOSHA KABUSHIKI KAISHA,CATALER CORPORATION
- 当前专利权人地址： JP Toyoto-shi, Aichi-ken JP Kakegawa-shi, Shizuoka
- 代理机构： Sughrue Mion, PLLC
- 优先权： JP2014-251878 20141212
- 国际申请： PCT/JP2015/006203 WO 20151211
- 国际公布： WO2016/092862 WO 20160616
- 主分类号： F01N3/10
- IPC分类号： F01N3/10 ; B01D53/94 ; B01J23/00 ; B01J23/10 ; B01J23/63 ; B01J35/00 ; B01J35/04 ; B01J35/10 ; B01J37/02 ; B01J37/03 ; B01J37/08 ; C01F17/00 ; C01G25/00 ; C01G25/02 ; B01J27/053
摘要：
The object of the present invention is to provide an exhaust gas purifying catalyst that can achieve high purification performance while suppressing H2S emissions. The object is solved by an exhaust gas purifying catalyst in which the top layer of a catalyst coating layer comprises a ceria-zirconia composite oxide having a pyrochlore-type ordered array structure, in which the ceria-zirconia composite oxide contains at least one additional element selected from the group consisting of praseodymium, lanthanum, and yttrium at 0.5 to 5.0 mol % in relation to the total cation amount, and the molar ratio of (cerium+additional element):(zirconium) is within the range from 43:57 to 48:52.
公开/授权文献
- US10556223B2 Exhaust gas purifying catalyst 公开/授权日：2020-02-11
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