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公开(公告)号：US07816300B2
公开(公告)日：2010-10-19
申请号：US12227523
申请日：2007-06-05
CPC分类号： B01J37/0234 , B01D53/945 , B01D2255/1021 , B01D2255/1023 , B01D2255/1026 , B01D2255/2065 , B01D2255/2068 , B01D2255/9022 , B01D2255/908 , B01J23/63 , B01J37/0244 , F01N2510/0682 , F01N2570/24 , Y02T10/22
摘要： The present invention provides an exhaust gas purification catalyst comprising a base material, and a two or more layered catalyst coating layer, formed on the base material, wherein the two or more layers have upper and lower layers, and wherein the upper layer contains a large amount of noble metal per liter of the base material more than that of the lower layer, and the lower layer contains a large amount of an oxygen storage/release material per liter of the base material more than that of the upper layer. This exhaust gas purification catalyst has more excellent H2S purifying performance than conventional catalysts while maintaining purifying performance against NOx and the other exhaust gas components.
摘要翻译： 本发明提供了一种排气净化催化剂，其包含基材和形成在基材上的两层以上的层叠催化剂被覆层，其中两层以上具有上层和下层，并且其中上层含有大的 贵金属的量比每一基底材料多于下层的贵金属，下层含有比上层更多的每升基材的大量的储氧/释放材料。 这种废气净化催化剂具有比常规催化剂更优异的H 2 S净化性能，同时保持对NOx和其它废气组分的净化性能。
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公开(公告)号：US20060247126A1
公开(公告)日：2006-11-02
申请号：US11405956
申请日：2006-04-17
申请人： Michihiko Takeuchi , Hirotaka Ori
发明人： Michihiko Takeuchi , Hirotaka Ori
IPC分类号： B01J23/00
CPC分类号： B01D53/945 , B01D53/9495 , Y02T10/22
摘要： An exhaust gas-purifying catalyst includes Nd and/or Pr as an active ingredient that suppresses generation of hydrogen sulfide.
摘要翻译： 废气净化催化剂包括Nd和/或Pr作为抑制硫化氢产生的活性成分。
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公开(公告)号：US10323554B2
公开(公告)日：2019-06-18
申请号：US15560703
申请日：2016-03-24
申请人： Hiromasa Suzuki , Masahide Miura , Yoshinori Saito , Satoru Katoh , Toshitaka Tanabe , Tetsuhiro Hirao , Tatsuya Ohashi , Hiroaki Naito , Hirotaka Ori , Michihiko Takeuchi , Keiichi Narita
发明人： Hiromasa Suzuki , Masahide Miura , Yoshinori Saito , Satoru Katoh , Toshitaka Tanabe , Tetsuhiro Hirao , Tatsuya Ohashi , Hiroaki Naito , Hirotaka Ori , Michihiko Takeuchi , Keiichi Narita
IPC分类号： F01N3/00 , F01N3/10 , B01J23/63 , B01D53/94 , B01J35/10 , B01J37/02 , B01J37/00 , B01D53/86 , B01J23/56 , B01J37/04 , F01N3/28 , B01J37/08 , B01J35/02
摘要： The present invention is directed to address the following problem: in an exhaust gas purification catalyst comprising a dual catalyst of a combination of a startup catalyst and an underfloor catalyst, reduction in the gas diffusivity of the underfloor catalyst results in reduction in the use efficiency of a catalytic active site, resulting in reduction in purification performance. The present invention relates to an exhaust gas purification catalyst comprising a dual catalyst of a combination of a startup catalyst and an underfloor catalyst having a catalyst coating where a large number of voids are included, wherein high-aspect-ratio pores having an aspect ratio of 5 or more account for a certain rate or more of the whole volume of the voids, to thereby enhance the purification performance of the catalyst.
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公开(公告)号：US20090137387A1
公开(公告)日：2009-05-28
申请号：US12227523
申请日：2007-06-05
CPC分类号： B01J37/0234 , B01D53/945 , B01D2255/1021 , B01D2255/1023 , B01D2255/1026 , B01D2255/2065 , B01D2255/2068 , B01D2255/9022 , B01D2255/908 , B01J23/63 , B01J37/0244 , F01N2510/0682 , F01N2570/24 , Y02T10/22
摘要： The present invention provides an exhaust gas purification catalyst comprising a base material, and a two or more layered catalyst coating layer, formed on the base material, wherein the two or more layers have upper and lower layers, and wherein the upper layer contains a large amount of noble metal per liter of the base material more than that of the lower layer, and the lower layer contains a large amount of an oxygen storage/release material per liter of the base material more than that of the upper layer. This exhaust gas purification catalyst has more excellent H2S purifying performance than conventional catalysts while maintaining purifying performance against NOx and the other exhaust gas components.
摘要翻译： 本发明提供了一种排气净化催化剂，其包含基材和形成在基材上的两层以上的层叠催化剂被覆层，其中两层以上具有上层和下层，并且其中上层含有大的 贵金属的量比每一基底材料多于下层的贵金属，下层含有比上层更多的每升基材的大量的储氧/释放材料。 这种废气净化催化剂具有比常规催化剂更优异的H 2 S净化性能，同时保持对NOx和其它废气组分的净化性能。
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公开(公告)号：US10556223B2
公开(公告)日：2020-02-11
申请号：US15534841
申请日：2015-12-11
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
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
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.
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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：US11602742B2
公开(公告)日：2023-03-14
申请号：US17178336
申请日：2021-02-18
申请人： Koji Sugiura , Hiromasa Nishioka , Naoto Miyoshi , Akemi Sato , Ryota Nakashima , Masatoshi Ikebe , Keisuke Murawaki , Hirotaka Ori
发明人： Koji Sugiura , Hiromasa Nishioka , Naoto Miyoshi , Akemi Sato , Ryota Nakashima , Masatoshi Ikebe , Keisuke Murawaki , Hirotaka Ori
IPC分类号： B01J23/40 , B01J23/42 , B01J23/44 , B01J23/46 , B01J35/00 , B01J35/04 , B01D53/94 , B01D46/24 , F01N3/28
摘要： Provided is an exhaust gas purification device that ensures an improved purification performance and a suppressed pressure loss. An exhaust gas purification device of the present disclosure includes a honeycomb substrate and an inflow cell side catalyst layer. disposed on a surface on the inflow cell side in an inflow side region of the partition wall. When a gas permeability coefficient of an inflow side partition wall portion including the inflow side region of the partition wall and the inflow cell side catalyst layer is Ka and a gas permeability coefficient of an outflow side partition wall portion including an outflow side region at least from the predetermined position to an outflow side end of the partition wall is Kb, a ratio Ka/Kb of the gas permeability coefficients is within a range of 0.4 or more and 0.8 or less.
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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：US07825063B2
公开(公告)日：2010-11-02
申请号：US11405956
申请日：2006-04-17
申请人： Masashi Takeuchi , Hirotaka Ori
发明人： Masashi Takeuchi , Hirotaka Ori
CPC分类号： B01D53/945 , B01D53/9495 , Y02T10/22
摘要： An exhaust gas-purifying catalyst includes Nd and/or Pr as an active ingredient that suppresses generation of hydrogen sulfide.
摘要翻译： 废气净化催化剂包括Nd和/或Pr作为抑制硫化氢产生的活性成分。
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公开(公告)号：US11053833B2
公开(公告)日：2021-07-06
申请号：US16857566
申请日：2020-04-24
申请人： Isao Chinzei , Masahide Miura , Seiji Nakahigashi , Hiromasa Suzuki , Toshio Yamamoto , Akira Morikawa , Satoru Katoh , Takashi Onozuka , Hirotaka Ori , Mitsuyoshi Okada , Sho Hoshino
发明人： Isao Chinzei , Masahide Miura , Seiji Nakahigashi , Hiromasa Suzuki , Toshio Yamamoto , Akira Morikawa , Satoru Katoh , Takashi Onozuka , Hirotaka Ori , Mitsuyoshi Okada , Sho Hoshino
摘要： The present disclosure provides the exhaust gas purification catalyst with the improved purification performance under the high Ga condition and the atmosphere where the A/F is rich. The present disclosure relates to an exhaust gas purification catalyst including a catalyst coating layer on a substrate, the catalyst coating layer containing a noble metal and a metal oxide, wherein in the catalyst coating layer: an average thickness of the coating layer is in a range from 50 μm to 100 μm; a porosity measured by a weight-in-water method is in a range from 50% by volume to 80% by volume; and high-aspect-ratio pores having an aspect ratio of 5 or more account for 0.5% by volume to 50% by volume of a whole volume of voids, the high-aspect-ratio pore having an equivalent circle diameter in a range from 2 μm to 50 μm in a cross-sectional image of a catalyst coating layer cross section perpendicular to an exhaust gas flow direction of the substrate and having an average aspect ratio in a range from 10 to 50, and wherein when a surface side in contact with an exhaust gas in a thickness direction of the catalyst coating layer is defined as 0% and a side in contact with the substrate is defined as 100%, 80% by mass or more of a total amount of the noble metal is present in a range from 0% to 25% or more and 70% or less.
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