公开(公告)号：US20180071680A1

公开(公告)日：2018-03-15

申请号：US15561656

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： B01D53/94 ,  B01J23/63 ,  F01N3/10 ,  B01J35/10

CPC分类号： B01D53/945 ,  B01D53/94 ,  B01D53/9477 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/9205 ,  B01J23/63 ,  B01J35/023 ,  B01J35/026 ,  B01J35/10 ,  B01J35/1076 ,  B01J35/108 ,  B01J37/0018 ,  B01J37/0036 ,  B01J37/0219 ,  B01J37/0234 ,  B01J37/08 ,  F01N3/101 ,  F01N3/28 ,  F01N3/281 ,  F01N3/2828 ,  F01N13/009 ,  F01N2510/06 ,  Y02T10/22

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 startup 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 having a catalyst coating where a large number of voids are included and an underfloor catalyst, 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.

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.

公开(公告)号：US09387464B2

公开(公告)日：2016-07-12

申请号：US14384283

申请日：2013-04-26

申请人： Masahide Miura ,  Atsushi Tanaka ,  Takahiro Suzuki ,  Tadashi Suzuki ,  Toshitaka Tanabe ,  Naoki Takahashi

发明人： Masahide Miura ,  Atsushi Tanaka ,  Takahiro Suzuki ,  Tadashi Suzuki ,  Toshitaka Tanabe ,  Naoki Takahashi

IPC分类号： B01J23/00 ,  B01J23/08 ,  B01J23/10 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/56 ,  B01J23/70 ,  B01J23/74 ,  B01J23/89 ,  B01J35/00 ,  B01J23/745 ,  B01J23/83 ,  C01G25/00 ,  C01G49/00 ,  B01J37/02 ,  B01J37/03

CPC分类号： B01J23/894 ,  B01J21/066 ,  B01J23/10 ,  B01J23/745 ,  B01J23/83 ,  B01J35/0006 ,  B01J35/002 ,  B01J37/0248 ,  B01J37/03 ,  C01G25/00 ,  C01G49/0018 ,  C01G49/0054 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2004/45 ,  C01P2004/61 ,  C01P2006/12

摘要： A composite oxide with a high oxygen storage capacity is provided without using cerium. The composite oxide is an iron oxide-zirconia composite oxide containing iron, zirconium, and a rare-earth element. The total content of Fe2O3, ZrO2, and an oxide of the rare-earth element is not less than 90 mass %, the content of an iron oxide in terms of Fe2O3 is 10 to 90 mass %, and the absolute value of the covariance COV(Fe, Zr+X) of the composite oxide, which has been baked in the atmosphere at a temperature of greater than or equal to 900° C. for 5 hours or more, is not greater than 20.

摘要翻译： 提供具有高储氧能力的复合氧化物，而不使用铈。 复合氧化物是含有铁，锆和稀土元素的氧化铁 - 氧化锆复合氧化物。 Fe2O3，ZrO2和稀土类元素的氧化物的总含量为90质量％以上，Fe 2 O 3的氧化铁含量为10〜90质量％，协方差COV的绝对值 在大气中在大气压900℃以上焙烧5小时以上的复合氧化物（Fe，Zr + X）不大于20。

公开(公告)号：US08105561B2

公开(公告)日：2012-01-31

申请号：US12225692

申请日：2006-12-01

申请人： Miho Hatanaka ,  Toshitaka Tanabe ,  Yasutaka Nagai ,  Toshio Yamamoto ,  Kazuhiko Dohmae ,  Nobuyuki Takagi ,  Masahide Miura ,  Yasuo Ikeda

发明人： Miho Hatanaka ,  Toshitaka Tanabe ,  Yasutaka Nagai ,  Toshio Yamamoto ,  Kazuhiko Dohmae ,  Nobuyuki Takagi ,  Masahide Miura ,  Yasuo Ikeda

IPC分类号： B01J23/40 ,  B01J23/38 ,  B01J23/42 ,  B01D53/56 ,  B01D53/34 ,  G05D23/00

CPC分类号： B01D53/945 ,  B01D2255/102 ,  B01J23/002 ,  B01J23/63 ,  B01J23/894 ,  B01J23/8946 ,  B01J23/96 ,  B01J35/006 ,  B01J35/0066 ,  B01J35/1014 ,  B01J37/0201 ,  B01J37/0205 ,  B01J37/0207 ,  B01J37/03 ,  B01J38/10 ,  B01J38/12 ,  B01J2523/00 ,  F01N3/2006 ,  F01N11/002 ,  F01N2550/02 ,  Y02T10/22 ,  Y02T10/47 ,  B01J2523/3706 ,  B01J2523/48 ,  B01J2523/3712 ,  B01J2523/3718 ,  B01J2523/36

摘要： A catalyst for purification of exhaust gas in which a noble metal is supported on a metal-oxide support wherein, in a oxidation atmosphere, the noble metal exists on the surface of the support in high oxidation state, and the noble metal binds with a cation of the support via an oxygen atom on the surface of the support to form a surface oxide layer and, in a reduction atmosphere, the noble metal exists on the surface of the support in a metal state, and an amount of noble metal exposed at the surface of the support, measured by CO chemisorption, is 10% or more in atomic ratio to a whole amount of the noble metal supported on the support.

摘要翻译： 一种用于净化废气的催化剂，其中贵金属负载在金属氧化物载体上，其中在氧化气氛中贵金属以高氧化态存在于载体的表面上，贵金属与阳离子结合 的载体上的氧原子形成表面氧化物层，并且在还原气氛中，贵金属以金属状态存在于载体的表面上，并且贵金属的量在 通过CO化学吸附测定的载体表面与支撑在载体上的贵金属的全部量的原子比为10％以上。

公开(公告)号：US20100016149A1

公开(公告)日：2010-01-21

申请号：US12448501

申请日：2008-05-16

申请人： Masato Machida ,  Keita Ikeue ,  Masahide Miura

发明人： Masato Machida ,  Keita Ikeue ,  Masahide Miura

IPC分类号： B01J27/053 ,  C01F17/00 ,  B01J27/02

CPC分类号： B01J23/10 ,  B01D53/945 ,  B01D2255/206 ,  B01D2255/908 ,  B01J23/63 ,  B01J27/053 ,  B01J37/03 ,  C01B13/0262 ,  C01B13/0281 ,  C01F17/0081 ,  C01F17/0093 ,  C01P2002/50 ,  Y02T10/22

摘要： There is provided an oxygen storage/release material using a rare earth oxysulfate or oxysulfide, which has a high oxygen storage/release capacity even at lower temperatures. The oxygen storage/release material of the present invention comprises a compound consisting of Pr2O2SO4 and/or Pr2O2S in which at least a part of Pr is replaced with Ce.

摘要翻译： 提供了使用稀土氧硫酸盐或氧硫化物的氧气储存/释放材料，即使在较低温度下也具有高的储氧/释放能力。 本发明的储氧/释放材料包括由Pr 2 O 2 SO 4和/或Pr 2 O 2 S组成的化合物，其中至少一部分Pr被Ce取代。

公开(公告)号：US07632776B2

公开(公告)日：2009-12-15

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。

公开(公告)号：US20090104088A1

公开(公告)日：2009-04-23

申请号：US12295369

申请日：2007-03-29

申请人： Nobuyuki Takagi ,  Masahide Miura ,  Shinichi Matsumoto ,  Toshitaka Tanabe ,  Yasutaka Nagai ,  Miho Hatanaka ,  Kazuhiko Dohmae ,  Toshio Yamamoto ,  Yasuo Ikeda

发明人： Nobuyuki Takagi ,  Masahide Miura ,  Shinichi Matsumoto ,  Toshitaka Tanabe ,  Yasutaka Nagai ,  Miho Hatanaka ,  Kazuhiko Dohmae ,  Toshio Yamamoto ,  Yasuo Ikeda

IPC分类号： F01N3/20 ,  F01N11/00

CPC分类号： F01N3/0814 ,  F01N3/0842 ,  F01N3/0864 ,  F01N3/0885 ,  F01N3/101 ,  F01N3/22 ,  F01N13/009 ,  F01N2270/00 ,  F01N2370/00 ,  F01N2560/022 ,  F01N2560/026 ,  F01N2570/16 ,  Y02T10/22

摘要： An exhaust gas purification system includes: a catalyst (3) provided in an exhaust gas passage of an internal combustion engine (1) and having a carrier containing a basic oxide and platinum carried on the carrier; a catalyst (4) for purifying NOx; and oxygen supply means (2).

摘要翻译： 排气净化系统包括：设置在内燃机（1）的排气通道中并具有承载在载体上的基本氧化物和铂的载体的催化剂（3） 用于净化NOx的催化剂（4） 和供氧装置（2）。

公开(公告)号：US20070197379A1

公开(公告)日：2007-08-23

申请号：US10593629

申请日：2005-04-27

申请人： Masahide Miura

发明人： Masahide Miura

IPC分类号： C99Z99/00

CPC分类号： B01J37/03 ,  B01D53/945 ,  B01D2255/102 ,  B01D2255/206 ,  B01D2255/20715 ,  B01J21/063 ,  B01J21/066 ,  B01J23/10 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/0013 ,  Y02T10/22

摘要： The present invention provides an exhaust gas purifying catalyst and a process for producing a metal oxide particle comprising multiple species of metal oxides and capable of satisfactorily exerting the properties of respective metal oxides. A process of the present invention comprises providing a sol containing at least a population of first colloid particles and a population of second colloid particles differing in the isoelectric point with each other; adjusting the pH of the sol to be closer to the isoelectric point of the population of first colloid particles than to the isoelectric point of the population of second colloid particles, thereby aggregating the population of first colloid particles; adjusting the pH of the sol, thereby aggregating the population of second colloid particles onto the population of first colloid particles aggregated; and drying and firing the obtained aggregate.

摘要翻译： 本发明提供了一种废气净化催化剂及其制备包含多种金属氧化物的金属氧化物颗粒的方法，能够令人满意地发挥各种金属氧化物的性能。 本发明的方法包括提供至少含有第一胶体颗粒群和等电点不同的第二胶体粒子群的溶胶; 调节溶胶的pH值比第二胶体颗粒群体的等电点更接近第一胶体颗粒群的等电点，从而聚集第一胶体颗粒群; 调节溶胶的pH值，从而将第二胶体颗粒群聚集在聚集的第一胶体颗粒群上; 并干燥并焙烧得到的骨料。

公开(公告)号：US20210205790A1

公开(公告)日：2021-07-08

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

IPC分类号： B01J23/46 ,  B01J23/42 ,  B01J35/02 ,  F01N3/10

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.

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

IPC分类号： F01N3/28 ,  B01J35/04

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.