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公开(公告)号：US11577226B2
公开(公告)日：2023-02-14
申请号：US17107997
申请日：2020-12-01
申请人： Seiji Nakahigashi , Isao Chinzei , Shogo Shirakawa , Hiromasa Suzuki , Masahide Miura , Takahiro Nishio , Norimichi Shimano , Hiroki Nihashi , Mitsuyoshi Okada , Takashi Onozuka , Souta Akiyama , Hiromi Togashi , Takahiro Noguchi , Isao Naito
发明人： Seiji Nakahigashi , Isao Chinzei , Shogo Shirakawa , Hiromasa Suzuki , Masahide Miura , Takahiro Nishio , Norimichi Shimano , Hiroki Nihashi , Mitsuyoshi Okada , Takashi Onozuka , Souta Akiyama , Hiromi Togashi , Takahiro Noguchi , Isao Naito
摘要： The present disclosure provides an exhaust gas purification catalyst having an improved Rh activation, which comprises a substrate and a catalyst coat layer formed on the substrate, the catalyst coat layer having a two-layer structure, wherein the catalyst coat layer includes an upstream portion on an upstream side and a downstream portion on a downstream side in an exhaust gas flow direction, and a part or all of the upstream portion is formed on a part of the downstream portion, wherein the upstream portion contains Rh fine particles and Pt, wherein the Rh fine particles have an average particle size measured by a transmission electron microscope observation of 1.0 nm or more to 2.0 nm or less, and a standard deviation σ of the particle size of 0.8 nm or less, and wherein the downstream portion contains Rh.
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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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4.发明申请公开(公告)号：US20150298099A1
公开(公告)日：2015-10-22
申请号：US14646498
申请日：2013-10-01
申请人： Yoshinori SAITO , Masahide MIURA
发明人： Yoshinori SAITO , Masahide MIURA
CPC分类号： B01J23/63 , B01D53/9413 , B01D53/945 , B01D2255/1023 , B01D2255/1025 , B01D2255/2061 , B01D2255/2063 , B01D2255/2092 , B01D2255/407 , B01D2255/9022 , B01D2255/908 , B01D2255/9202 , B01J23/002 , B01J23/10 , B01J35/023 , B01J37/0244 , B01J37/0248 , B01J37/03 , B01J2523/00 , C01F7/002 , C01G25/006 , C01G25/02 , C01P2004/64 , C01P2006/12 , C01P2006/80 , F01N3/101 , Y02A50/2324 , Y02T10/22 , B01J2523/31 , B01J2523/36 , B01J2523/3706 , B01J2523/3712 , B01J2523/48 , B01J2523/822 , B01J2523/824
摘要： This invention provides complex oxide particles as carriers that are capable of imparting high heat tolerance and oxygen storage capacity to a catalyst and an exhaust gas purifying catalyst for automobiles using the same. The complex oxide particles comprise ceria-zirconia complex oxide, alumina, yttria, and at least one oxide of an element selected from among rare earth elements other than cerium and yttrium and alkaline earth metals, in which alumina content is 70% to 89% by mass relative to the complex oxide particles and yttria content is 0.01% to 0.22% by mole relative to the ceria-zirconia complex oxide.
摘要翻译： 本发明提供复合氧化物颗粒作为载体，其能够赋予催化剂高的耐热性和储氧能力，以及赋予其使用该汽车的废气净化催化剂。 复合氧化物颗粒包括二氧化铈 - 氧化锆复合氧化物，氧化铝，氧化钇和至少一种选自除了铈和钇和碱土金属之外的稀土元素中的元素的氧化物，其中氧化铝含量为70％至89％ 相对于复合氧化物粒子的质量和氧化钇含量相对于二氧化铈 - 氧化锆复合氧化物为0.01〜0.22摩尔％。
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5.发明申请公开(公告)号：US20100004117A1
公开(公告)日：2010-01-07
申请号：US12295454
申请日：2007-03-30
申请人： Masahide Miura , Nobuyuki Takagi , Shinichi Matsumoto , Toshitaka Tanabe , Yasutaka Nagai , Kazuhiko Dohmae , Yasuo Ikeda
发明人： Masahide Miura , Nobuyuki Takagi , Shinichi Matsumoto , Toshitaka Tanabe , Yasutaka Nagai , Kazuhiko Dohmae , Yasuo Ikeda
CPC分类号： B01J37/0221 , B01D53/945 , B01D2255/206 , B01J23/63 , B01J35/008 , B01J35/026 , B01J35/10 , B01J35/1014 , B01J37/0234 , Y02T10/22 , Y10T428/2991
摘要： A metal oxide catalyst carrier particle has a center portion and an outer skin portion each containing a first metal oxide and a second metal oxide. The center portion and the outer skin portion are different in composition. The mole fraction of the metal of the first metal oxide is higher in the center portion than in the outer skin portion and the mole fraction of the metal of the second metal oxide is higher in the outer skin portion than in the center portion. The second metal oxide is selected from the group consisting of rare earth oxides, except for ceria, and alkali earth metal oxides. In addition, platinum is supported on the metal oxide catalyst carrier particle, thus forming an exhaust gas purification catalyst.
摘要翻译： 金属氧化物催化剂载体颗粒具有分别含有第一金属氧化物和第二金属氧化物的中心部分和外皮部分。 中心部分和外皮部分的组成不同。 第一金属氧化物的金属的摩尔分数在中心部分高于外皮部分，并且第二金属氧化物的金属的摩尔分数在外皮部分比在中心部分高。 第二金属氧化物选自除二氧化铈以外的稀土氧化物和碱土金属氧化物。 此外，铂负载在金属氧化物催化剂载体颗粒上，从而形成废气净化催化剂。
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公开(公告)号：US20070129246A1
公开(公告)日：2007-06-07
申请号：US10589421
申请日：2005-04-27
申请人： Masahide Miura
发明人： Masahide Miura
IPC分类号： B01J23/10
CPC分类号： B01J23/10 , B01D53/945 , B01D2255/102 , B01D2255/1025 , B01D2255/206 , B01D2255/20715 , B01D2255/407 , B01D2255/902 , B01D2255/908 , B01J21/066 , B01J23/63 , B01J35/0006 , B01J35/0013 , B01J35/023 , B01J37/03 , Y02T10/22
摘要： The present invention provides an exhaust gas purifying catalyst and a production process thereof. An exhaust gas purifying catalyst of the present invention comprises a metal oxide particle (1, 2) and rhodium (3) supported thereon, the metal oxide particle (1, 2) comprising a core part (1) relatively rich in ceria and a surface layer (2) relatively rich in zirconia.
摘要翻译： 本发明提供一种废气净化催化剂及其制造方法。 本发明的废气净化催化剂包含负载在其上的金属氧化物颗粒（1,2）和铑（3），所述金属氧化物颗粒（1,2）包含相对富含二氧化铈的芯部（1）和表面 层（2）相对富含氧化锆。
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公开(公告)号：US20050014638A1
公开(公告)日：2005-01-20
申请号：US10889042
申请日：2004-07-13
申请人： Masahide Miura
发明人： Masahide Miura
IPC分类号： F01N3/10 , B01D53/94 , B01J23/40 , B01J23/63 , B01J35/10 , B01J37/02 , B01J37/025 , F01N3/20 , F01N3/28
CPC分类号： B01D53/945 , B01J23/40 , B01J23/63 , B01J35/10 , B01J37/0244 , Y02T10/22
摘要： An exhaust gas cleaning catalyst comprising: a carrier substrate; a catalyst carrying layer formed on the carrier substrate; and a noble metal catalyst carried by the catalyst carrying layer; wherein said catalyst carrying layer comprises at least two layers, and of the at least two layers, lower layer on the side of the carrier substrate is a metal oxide layer with porosity of 40˜75% and upper layer on the side of the top surface is a metal oxide layer having thermal conductivity of 5 W/mK or less.
摘要翻译： 一种废气净化催化剂，包括：载体基材; 形成在载体基材上的催化剂载体层; 和由催化剂载体层承载的贵金属催化剂; 其中所述催化剂载体层包含至少两个层，并且在所述至少两个层中，所述载体基底侧的下层是具有40〜75％孔隙率的金属氧化物层，在所述顶表面侧的上层 是导热率为5W / m·K以下的金属氧化物层。
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公开(公告)号：US11795855B2
公开(公告)日：2023-10-24
申请号：US17211112
申请日：2021-03-24
申请人： Isao Chinzei , Takahiro Nishio , Shogo Shirakawa , Masahide Miura , Hiromasa Suzuki , Yuki Kido , Minoru Ito , Sho Hoshino , Shin Nakayama
发明人： Isao Chinzei , Takahiro Nishio , Shogo Shirakawa , Masahide Miura , Hiromasa Suzuki , Yuki Kido , Minoru Ito , Sho Hoshino , Shin Nakayama
CPC分类号： F01N3/2803 , B01J21/14 , B01J23/44 , B01J23/464 , B01J35/0006 , B01J35/023 , F01N2370/02 , F01N2510/0684
摘要： Provided is an exhaust gas purification catalyst capable of reducing a noble metal amount while maintaining a catalyst performance, which comprises a substrate and at least three catalyst coating layers formed on the substrate, the first and third catalyst coating layers contain Pd as a catalyst metal and are formed in a range of a predetermined length from an upstream end surface in an exhaust gas flow direction, and the second catalyst coating layer contains Rh as a catalyst metal and is formed in a range of a predetermined length from a downstream end surface in the exhaust gas flow direction.
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公开(公告)号：US11759769B2
公开(公告)日：2023-09-19
申请号：US17495881
申请日：2021-10-07
申请人： Isao Chinzei , Seiji Nakahigashi , Takumi Tojo , Masahide Miura , Nobuyuki Takagi , Yoshiteru Yazawa , Sho Hoshino , Minoru Ito , Naoto Fujita , Tomomasa Aikawa
发明人： Isao Chinzei , Seiji Nakahigashi , Takumi Tojo , Masahide Miura , Nobuyuki Takagi , Yoshiteru Yazawa , Sho Hoshino , Minoru Ito , Naoto Fujita , Tomomasa Aikawa
CPC分类号： B01J23/58 , B01D53/945 , B01J35/04 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2042 , B01D2255/9155 , F01N3/2803 , F01N2370/02
摘要： Provided is an exhaust gas purification device that allows improving an exhaust gas purification performance. An exhaust gas purification device of the present disclosure includes a substrate and a catalyst layer disposed on the substrate. The catalyst layer contains a porous carrier, a catalytic metal that is supported by the porous carrier and belongs to platinum group, an alkaline earth metal supported by the porous carrier, and an alkaline earth metal not supported by the porous carrier. At least a part of the alkaline earth metal supported by the porous carrier is supported inside the porous carrier.
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公开(公告)号：US20210301706A1
公开(公告)日：2021-09-30
申请号：US17211112
申请日：2021-03-24
申请人： Isao CHINZEI , Takahiro NISHIO , Shogo SHIRAKAWA , Masahide MIURA , Hiromasa SUZUKI , Yuki KIDO , Minoru ITO , Sho HOSHINO , Shin NAKAYAMA
发明人： Isao CHINZEI , Takahiro NISHIO , Shogo SHIRAKAWA , Masahide MIURA , Hiromasa SUZUKI , Yuki KIDO , Minoru ITO , Sho HOSHINO , Shin NAKAYAMA
摘要： Provided is an exhaust gas purification catalyst capable of reducing a noble metal amount while maintaining a catalyst performance, which comprises a substrate and at least three catalyst coating layers formed on the substrate, the first and third catalyst coating layers contain Pd as a catalyst metal and are formed in a range of a predetermined length from an upstream end surface in an exhaust gas flow direction, and the second catalyst coating layer contains Rh as a catalyst metal and is formed in a range of a predetermined length from a downstream end surface in the exhaust gas flow direction.
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