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公开(公告)号:US10143968B2
公开(公告)日:2018-12-04
申请号:US15534805
申请日:2015-12-11
申请人: Hiromasa Suzuki , Takeru Yoshida , Masahide Miura , Isao Chinzei , Mitsuyoshi Okada , Toshitaka Tanabe , Akihiko Suda , Hirotaka Ori , Akiya Chiba , Kosuke Iizuka , Akira Morikawa
发明人: Hiromasa Suzuki , Takeru Yoshida , Masahide Miura , Isao Chinzei , Mitsuyoshi Okada , Toshitaka Tanabe , Akihiko Suda , Hirotaka Ori , Akiya Chiba , Kosuke Iizuka , Akira Morikawa
IPC分类号: B01J23/38 , B01J23/40 , B01J23/42 , B01J23/44 , B01J23/63 , B01J23/10 , B01J35/00 , B01D53/94 , B01J37/02 , B01J37/03 , C04B35/488
摘要: The object of the present invention is to provide a high-performance exhaust gas purifying catalyst that can achieve oxygen absorption/release capacity and NOx purification performance. The object is solved by an exhaust gas purifying catalyst, which comprises a ceria-zirconia composite oxide having a pyrochlore-type ordered array structure in the upstream part of the catalyst coating layer, 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 % of the total cation amount, and has a molar ratio of (cerium+the additional element):(zirconium) of 43:57 to 48:52.
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公开(公告)号:US10384163B2
公开(公告)日:2019-08-20
申请号:US15534794
申请日:2015-12-11
申请人: Isao Chinzei , Hiromasa Suzuki , Takeru Yoshida , Masahide Miura , Yuki Aoki , Mitsuyoshi Okada , Toshitaka Tanabe , Akihiko Suda , Yoshinori Saito , Hirotaka Ori , Kosuke Iizuka , Akira Morikawa
发明人: Isao Chinzei , Hiromasa Suzuki , Takeru Yoshida , Masahide Miura , Yuki Aoki , Mitsuyoshi Okada , Toshitaka Tanabe , Akihiko Suda , Yoshinori Saito , Hirotaka Ori , Kosuke Iizuka , Akira Morikawa
IPC分类号: B01D53/94 , B01J37/02 , B01J37/03 , B01J35/00 , B01J23/00 , B01J23/10 , B01J23/63 , C01G25/02 , C01F17/00 , F01N3/10 , B01J35/10 , B01J37/00 , B01J35/02 , B01J37/08 , 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 lower layer of the 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.
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公开(公告)号:US10058846B2
公开(公告)日:2018-08-28
申请号:US15663952
申请日:2017-07-31
申请人: Yoshinori Saito , Masahide Miura , Seiji Nakahigashi , Hiromasa Suzuki , Takahiro Suzuki , Kosuke Iizuka , Minoru Ito , Ryota Nakashima
发明人: Yoshinori Saito , Masahide Miura , Seiji Nakahigashi , Hiromasa Suzuki , Takahiro Suzuki , Kosuke Iizuka , Minoru Ito , Ryota Nakashima
IPC分类号: B01J23/10 , B01J23/63 , B01J21/06 , B01J35/00 , B01J35/02 , B01J35/04 , B01J20/02 , B01J20/28 , B01J37/02 , B01J20/32 , B01D53/94
CPC分类号: B01J23/10 , B01D53/9445 , B01D53/945 , B01D2255/1023 , B01D2255/1025 , B01D2255/2061 , B01D2255/2063 , B01D2255/2066 , B01D2255/2092 , B01D2255/407 , B01D2255/9022 , B01D2255/908 , B01D2255/9202 , B01J20/0211 , B01J20/0225 , B01J20/28004 , B01J20/3236 , B01J23/63 , B01J35/0006 , B01J35/002 , B01J35/023 , B01J37/0244 , C01G25/00 , Y02T10/22
摘要: An catalyst for purifying exhaust gas comprising an OCS material that has sufficient heat resistance and achieves a favorable balance between the oxygen storage volume and the oxygen absorption/release rate includes an catalyst for purifying exhaust, which has a substrate and a catalyst coating layer formed on the substrate, wherein the catalyst coating layer comprises a ceria-zirconia-based composite oxide having a pyrochlore structure in an amount of 5 to 100 g/L based on the volume of the substrate, the ceria-zirconia-based composite oxide has a secondary particle size (D50) of 3 μm to 7 μm, and the ceria-zirconia-based composite oxide optionally contains praseodymium.
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公开(公告)号:US10576420B2
公开(公告)日:2020-03-03
申请号:US15534794
申请日:2015-12-11
申请人: Isao Chinzei , Hiromasa Suzuki , Takeru Yoshida , Masahide Miura , Yuki Aoki , Mitsuyoshi Okada , Toshitaka Tanabe , Akihiko Suda , Yoshinori Saito , Hirotaka Ori , Kosuke Iizuka , Akira Morikawa
发明人: Isao Chinzei , Hiromasa Suzuki , Takeru Yoshida , Masahide Miura , Yuki Aoki , Mitsuyoshi Okada , Toshitaka Tanabe , Akihiko Suda , Yoshinori Saito , Hirotaka Ori , Kosuke Iizuka , Akira Morikawa
IPC分类号: B01D53/94 , B01J23/00 , F01N3/10 , C01G25/02 , B01J23/10 , B01J23/63 , B01J35/00 , B01J35/10 , B01J37/00 , B01J37/02 , B01J37/03 , C01F17/00 , B01J37/08 , B01J35/02 , 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 lower layer of the 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.
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公开(公告)号:US20180236401A1
公开(公告)日:2018-08-23
申请号:US15534794
申请日:2015-12-11
申请人: Isao CHINZEI , Hiromasa SUZUKI , Takeru YOSHIDA , Masahide MIURA , Yuki AOKI , Mitsuyoshi OKADA , Toshitaka TANABE , Akihiko SUDA , Yoshinori SAITO , Hirotaka ORI , Kosuke IIZUKA , Akira MORIKAWA
发明人: Isao CHINZEI , Hiromasa SUZUKI , Takeru YOSHIDA , Masahide MIURA , Yuki AOKI , Mitsuyoshi OKADA , Toshitaka TANABE , Akihiko SUDA , Yoshinori SAITO , Hirotaka ORI , Kosuke IIZUKA , Akira MORIKAWA
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 lower layer of the 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.
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公开(公告)号:US20180065111A1
公开(公告)日:2018-03-08
申请号:US15663952
申请日:2017-07-31
申请人: Yoshinori SAITO , Masahide MIURA , Seiji NAKAHIGASHI , Hiromasa SUZUKI , Takahiro SUZUKI , Kosuke IIZUKA , Minoru ITO , Ryota NAKASHIMA
发明人: Yoshinori SAITO , Masahide MIURA , Seiji NAKAHIGASHI , Hiromasa SUZUKI , Takahiro SUZUKI , Kosuke IIZUKA , Minoru ITO , Ryota NAKASHIMA
IPC分类号: B01J23/10 , B01J35/02 , B01J20/02 , B01J20/28 , B01J23/63 , B01J37/02 , B01J20/32 , B01J35/00 , B01D53/94
CPC分类号: B01J23/10 , B01D53/9445 , B01D53/945 , B01D2255/1023 , B01D2255/1025 , B01D2255/2061 , B01D2255/2063 , B01D2255/2066 , B01D2255/2092 , B01D2255/407 , B01D2255/9022 , B01D2255/908 , B01D2255/9202 , B01J20/0211 , B01J20/0225 , B01J20/28004 , B01J20/3236 , B01J23/63 , B01J35/0006 , B01J35/002 , B01J35/023 , B01J37/0244 , C01G25/00
摘要: An catalyst for purifying exhaust gas comprising an OCS material that has sufficient heat resistance and achieves a favorable balance between the oxygen storage volume and the oxygen absorption/release rate includes an catalyst for purifying exhaust, which has a substrate and a catalyst coating layer formed on the substrate, wherein the catalyst coating layer comprises a ceria-zirconia-based composite oxide having a pyrochlore structure in an amount of 5 to 100 g/L based on the volume of the substrate, the ceria-zirconia-based composite oxide has a secondary particle size (D50) of 3 μm to 7 μm, and the ceria-zirconia-based composite oxide optionally contains praseodymium.
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