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公开(公告)号：US20210197175A1
公开(公告)日：2021-07-01
申请号：US17088767
申请日：2020-11-04
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , CATALER CORPORATION
Inventor： Takahiro NISHIO , Shogo SHIRAKAWA , Masahide MIURA , Isao CHINZEI , Seiji NAKAHIGASHI , Norimichi SHIMANO , Hiromi TOGASHI , Hiroki NIHASHI , Mitsuyoshi OKADA , Takashi ONOZUKA , Souta AKIYAMA , Isao NAITO
Abstract: The present disclosure relates to an exhaust gas control catalyst including a base and a catalyst coating layer having a two-layer structure on the base. The catalyst coating layer includes a lower layer on the base, and an upper layer on the lower layer. The upper layer of the catalyst coating layer contains Rh particles in which a mean particle diameter measured by observation using a transmission electron microscope is 1.0 nm or more and 2.0 nm or less and a particle-diameter standard deviation σ is 0.8 nm or less. A length of the upper layer from an end face on a downstream side in an exhaust gas flow direction falls within a range of 70% or more and 100% or less of a total length of the base.
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公开(公告)号：US20220134313A1
公开(公告)日：2022-05-05
申请号：US17435007
申请日：2020-02-12
Applicant: CATALER CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroki NIHASHI , Shogo KAWAMURA , Tomomasa AIKAWA , Isao NAITO , Shogo SHIRAKAWA , Masahide MIURA , Nobuyuki TAKAGI , Norimichi SHIMANO
Abstract: A supported catalyst particles include oxide carrier particles and noble metal particles supported on the oxide carrier particles, wherein the mass of the noble metal particles is less than or equal to 5 mass % based on the mass of the oxide carrier particles, and the average particle size of the noble metal particles measured by transmission electron microscopy is 1.0-2.0 nm, with the standard deviation σ less than or equal to 0.8 nm.
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公开(公告)号：US20180264409A1
公开(公告)日：2018-09-20
申请号：US15534805
申请日：2015-12-11
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , CATALER CORPORATION
Inventor： Hiromasa SUZUKI , Takeru YOSHIDA , Masahide MIURA , Isao CHINZEI , Mitsuyoshi OKADA , Toshitaka TANABE , Akihiko SUDA , Hirotaka ORI , Akiya CHIBA , Kosuke IIZUKA , Akira MORIKAWA
IPC: B01D53/94 , B01J37/02 , B01J37/03 , C04B35/488
CPC classification number: B01D53/945 , B01D2255/1021 , B01D2255/1025 , B01D2255/2061 , B01D2255/2063 , B01D2255/2066 , B01D2255/40 , B01D2255/407 , B01D2255/9032 , B01D2255/908 , B01D2255/9207 , B01D2258/012 , B01J23/002 , B01J23/63 , B01J35/0006 , B01J35/002 , B01J35/023 , B01J37/0201 , B01J37/0244 , B01J37/0248 , B01J37/03 , B01J37/038 , C01F17/0043 , C01G25/02 , C01P2002/50 , C01P2002/54 , C04B35/488 , C04B35/6261 , C04B2235/3224 , C04B2235/3229 , C04B2235/3244 , C04B2235/443 , C04B2235/5436 , C04B2235/604 , C04B2235/664 , C04B2235/76 , Y02T10/22
Abstract: 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：US20250058302A1
公开(公告)日：2025-02-20
申请号：US18913117
申请日：2024-10-11
Applicant: CATALER CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroki NIHASHI , Shogo KAWAMURA , Tomomasa AIKAWA , Isao NAITO , Shogo SHIRAKAWA , Masahide MIURA , Nobuyuki TAKAGI , Norimichi SHIMANO
Abstract: A supported catalyst particles include oxide carrier particles and noble metal particles supported on the oxide carrier particles, wherein the mass of the noble metal particles is less than or equal to 5 mass % based on the mass of the oxide carrier particles, and the average particle size of the noble metal particles measured by transmission electron microscopy is 1.0-2.0 nm, with the standard deviation σ less than or equal to 0.8 nm.
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公开(公告)号：US20180250657A1
公开(公告)日：2018-09-06
申请号：US15974060
申请日：2018-05-08
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , CATALER CORPORATION
Inventor： Akira MORIKAWA , Kae KONISHI , Toshitaka TANABE , Akihiko SUDA , Masahide MIURA , Isao CHINZEI , Hiromasa SUZUKI , Akiya CHIBA , Kosuke IIZUKA
IPC: B01J23/10 , C04B35/50 , C01G25/00 , C04B35/626 , B01J23/00 , B01J23/63 , B01J35/00 , B01J35/02 , B01J37/00 , B01D53/94 , B01J37/03 , C04B35/488 , B01J37/12 , B01J37/14 , B01J37/16 , B01J37/08
CPC classification number: B01J23/10 , B01D53/94 , B01D2255/407 , B01D2255/908 , B01D2255/9202 , B01J23/002 , B01J23/63 , B01J35/002 , B01J35/023 , B01J37/0009 , B01J37/0036 , B01J37/0063 , B01J37/03 , B01J37/08 , B01J37/12 , B01J37/14 , B01J37/16 , C01G25/00 , C01P2002/36 , C01P2002/50 , C01P2002/72 , C01P2006/12 , C04B35/488 , C04B35/50 , C04B35/6261 , C04B35/6265 , C04B2235/3229 , C04B2235/3244 , C04B2235/443 , C04B2235/5436 , C04B2235/5463 , C04B2235/604 , C04B2235/661 , C04B2235/664 , C04B2235/76 , C04B2235/80
Abstract: A ceria-zirconia-based composite oxide containing a composite oxide of ceria and zirconia is provided, in which primary particles having a particle diameter of 1.5 to 4.5 μm account for, on a particle number basis, at least 50% of all primary particles in the ceria-zirconia-based composite oxide, and the molar ratio of cerium to zirconium in the ceria-zirconia-based composite oxide is between 43:57 and 55:45.
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Patent Agency Ranking
6.发明申请CERIA-ZIRCONIA COMPOSITE OXIDE, METHOD FOR PRODUCING THE SAME, AND CATALYST FOR PURIFYING EXHAUST GAS USING THE CERIA-ZIRCONIA COMPOSITE OXIDE 审中-公开CERIA-ZIRCONIA复合氧化物，其制造方法和使用CERIA-ZIRCONIA复合氧化物净化排气的催化剂公开(公告)号：US20160250620A1
公开(公告)日：2016-09-01
申请号：US15026760
申请日：2014-10-02
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , CATALER CORPORATION
Inventor： Akira MORIKAWA , Kae KONISHI , Toshitaka TANABE , Akihiko SUDA , Masahide MIURA , Isao CHINZEI , Hiromasa SUZUKI , Akiya CHIBA , Kosuke IIZUKA
CPC classification number: B01J23/10 , B01D53/9445 , B01D2255/2063 , B01D2255/407 , B01D2255/908 , B01J23/002 , B01J23/63 , B01J23/66 , B01J35/002 , B01J35/023 , B01J37/0036 , B01J37/0063 , B01J37/02 , B01J37/0201 , B01J37/03 , B01J37/04 , B01J37/08 , B01J2523/00 , C01F17/0018 , C01G25/00 , C01P2002/36 , C01P2002/50 , C01P2002/74 , C01P2002/85 , C01P2004/04 , C01P2004/61 , C01P2004/64 , C01P2006/12 , C01P2006/37 , C04B35/488 , C04B35/6261 , C04B35/6265 , C04B35/62655 , C04B35/62685 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3244 , C04B2235/443 , C04B2235/5436 , C04B2235/549 , C04B2235/604 , C04B2235/652 , C04B2235/656 , C04B2235/6567 , C04B2235/75 , C04B2235/76 , C04B2235/762 , Y02T10/22 , B01J2523/3706 , B01J2523/3712 , B01J2523/48 , B01J2523/36 , B01J2523/3718 , B01J2523/842 , B01J2523/31 , B01J2523/824
Abstract: A ceria-zirconia composite oxide includes at least one of lanthanum, yttrium, and praseodymium. A rate of a total content of the at least one rare earth element to a total content of cerium and zirconium is 0.1 at % to 4.0 at %. A content of the rare earth element present in near-surface regions, which are at a distance of less than 50 nm from surfaces of primary particles of the ceria-zirconia composite oxide, accounts for 90 at % or more of the total content of the rare earth element. An average particle size of the primary particles of the ceria-zirconia composite oxide is 2.2 μm to 4.5 μm. After a predetermined durability test, the intensity ratio I(14/29) of a diffraction line at 2θ=14.5° to a diffraction line at 2θ=29° and the intensity ratio I(28/29) of a diffraction line at 2θ=28.5° to the diffraction line at 2θ=29° respectively satisfy the following conditions: I(14/29)≧0.02, and I(28/29)≦0.08.
Abstract translation: 二氧化铈 - 氧化锆复合氧化物包括镧，钇和镨中的至少一种。 至少一种稀土元素的总含量与铈和锆的总含量的比率为0.1原子％至4.0原子％。 存在于距二氧化铈 - 氧化锆复合氧化物的一次粒子的表面小于50nm的近表面区域中的稀土元素的含量为90质量％以上 稀土元素 二氧化铈 - 氧化锆复合氧化物的一次粒子的平均粒径为2.2μm〜4.5μm。 在预定的耐久性试验之后，在2θ= 14.5°处的衍射线与2θ= 29°的衍射线的强度比I（14/29）和在2θ= 2°时的衍射线的强度比I（28/29） 在2θ= 29°时的衍射线分别满足28.5°的条件：I（14/29）≥0.02，I（28/29）≤0.08。
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7.发明申请CERIA-ZIRCONIA-BASED COMPOSITE OXIDE AND METHOD FOR PRODUCING SAME, AND EXHAUST GAS PURIFICATION CATALYST INCLUDING CERIA-ZIRCONIA-BASED COMPOSITE OXIDE 审中-公开基于CERIA-ZIRCONIA的氧化复合氧化物及其生产方法，以及包括基于CERA-ZIRCONIA的复合氧化物的排气净化催化剂公开(公告)号：US20160184801A1
公开(公告)日：2016-06-30
申请号：US14910378
申请日：2014-08-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , CATALER CORPORATION
Inventor： Akira MORIKAWA , Kae KONISHI , Toshitaka TANABE , Akihiko SUDA , Masahide MIURA , Isao CHINZEI , Hiromasa SUZUKI , Akiya CHIBA , Kosuke IIZUKA
CPC classification number: B01J23/10 , B01D53/94 , B01D2255/407 , B01D2255/908 , B01D2255/9202 , B01J23/002 , B01J23/63 , B01J35/002 , B01J35/023 , B01J37/0009 , B01J37/0036 , B01J37/0063 , B01J37/03 , B01J37/08 , B01J37/12 , B01J37/14 , B01J37/16 , C01G25/00 , C01P2002/36 , C01P2002/50 , C01P2002/72 , C01P2006/12 , C04B35/488 , C04B35/50 , C04B35/6261 , C04B35/6265 , C04B2235/3229 , C04B2235/3244 , C04B2235/443 , C04B2235/5436 , C04B2235/5463 , C04B2235/604 , C04B2235/661 , C04B2235/664 , C04B2235/76 , C04B2235/80
Abstract: A ceria-zirconia-based composite oxide containing a composite oxide of ceria and zirconia is provided, in which primary particles having a particle diameter of 1.5 to 4.5 μm account for, on a particle number basis, at least 50% of all primary particles in the ceria-zirconia-based composite oxide, and the molar ratio of cerium to zirconium in the ceria-zirconia-based composite oxide is between 43:57 and 55:45.
Abstract translation: 提供了含有二氧化铈和氧化锆复合氧化物的二氧化铈 - 氧化锆系复合氧化物，其中粒径为1.5〜4.5μm的一次粒子以粒子数计算为所有初级粒子的至少50％ 二氧化铈 - 氧化锆系复合氧化物，二氧化铈 - 氧化锆类复合氧化物中的铈与锆的摩尔比为43:57〜55:45。
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8.发明申请CERIA-ZIRCONIA-BASED COMPOSITE OXIDE AND METHOD FOR PRODUCING SAME, AND CATALYST FOR EXHAUST GAS PURIFICATION INCLUDING CERIA-ZIRCONIA-BASED COMPOSITE OXIDE 有权基于CERIA-ZIRCONIA的氧化复合氧化物及其生产方法，以及用于排气净化的催化剂，其中包括以CERIA-ZIRCONIA为基础的复合氧化物公开(公告)号：US20160121302A1
公开(公告)日：2016-05-05
申请号：US14897940
申请日：2014-06-12
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , CATALER CORPORATION
Inventor： Akira MORIKAWA , Kae KONISHI , Toshitaka TANABE , Akihiko SUDA , Masahide MIURA , Hiromasa SUZUKI , Isao CHINZEI , Akiya CHIBA , Kosuke IIZUKA
CPC classification number: B01J23/10 , B01J37/0009 , B01J37/12 , B01J37/16 , C01G25/00 , C01P2002/50 , C01P2002/74 , C01P2004/61 , C01P2006/12 , B01J2523/00 , B01J2523/3712 , B01J2523/48 , B01J2523/3706 , B01J2523/36 , B01J2523/3718
Abstract: A ceria-zirconia-based composite oxide including a composite oxide containing ceria and zirconia, wherein the ceria-zirconia-based composite oxide contains at least one member selected from the group consisting of praseodymium, lanthanum, and yttrium in an amount of 0.5 to 5.0 mol % relative to a total amount of the cations contained in the ceria-zirconia-based composite oxide, where the ratio of the content of both cerium and the at least one member selected from the group consisting of praseodymium, lanthanum, and yttrium in the ceria-zirconia-based composite oxide to the content of zirconium therein ([cerium and the at least one member selected from the group consisting of praseodymium, lanthanum, and yttrium]:[zirconium]) is in the range of 43:57 to 48:52 by mole ratio.
Abstract translation: 一种二氧化铈 - 氧化锆系复合氧化物，其包含含有二氧化铈和氧化锆的复合氧化物，其中所述二氧化铈 - 氧化锆系复合氧化物含有选自镨，镧和钇中的至少一种，其含量为0.5〜5.0 相对于二氧化铈 - 氧化锆类复合氧化物中所含的阳离子的总量的摩尔％，其中铈和选自镨，镧和钇中的至少一种的含量在 二氧化铈 - 氧化锆基复合氧化物与其中锆的含量（[铈和选自镨，镧和钇中的至少一种]：[锆]）在43:57至48的范围内 ：52摩尔比。
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公开(公告)号：US20180243728A1
公开(公告)日：2018-08-30
申请号：US15553020
申请日：2016-02-17
Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO , TOYOTA JIDOSHA KABUSHIKI KAISHA , CATALER CORPORATION
Inventor： Satoru KATOH , Toshitaka TANABE , Masahide MIURA , Hiromasa SUZUKI , Hiroaki NAITO , Hirotaka ORI , Keiichi NARITA , Michihiko TAKEUCHI , Tatsuya OHASHI
CPC classification number: B01J23/63 , B01D53/94 , B01D2255/1021 , B01D2255/407 , B01D2255/9202 , B01J35/023 , B01J35/026 , B01J35/04 , B01J35/10 , B01J35/1076 , B01J35/108 , B01J37/0018 , B01J37/0036 , B01J37/0219 , B01J37/0234 , B01J37/08 , F01N3/28 , F01N2330/02 , F01N2330/06 , F01N2510/068
Abstract: A catalyst for purification of exhaust gas, wherein a substrate and a catalyst coat layer which is formed on a surface of the substrate and which comprises catalyst particles, wherein the catalyst coat layer has an average thickness in a range of 25 to 160 μm, and a void fraction in a range of 50 to 80% by volume as measured by a weight-in-water method, 0.5 to 50% by volume of all voids in the catalyst coat layer consist of high-aspect ratio pores which have equivalent circle diameters in a range of 2 to 50 μm in a cross-sectional image of a cross-section of the catalyst coat layer which the cross-section is perpendicular to a flow direction of exhaust gas in the substrate, and which have aspect ratios of 5 or higher, and the high-aspect ratio pores have an average aspect ratio in a range of 10 to 50.
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公开(公告)号：US20170291163A1
公开(公告)日：2017-10-12
申请号：US15482045
申请日：2017-04-07
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA , CATALER CORPORATION
Inventor： Yoshinori SAITO , Masahide MIURA , Tetsuhiro HIRAO , Masanao SATO , Hirotaka ORI
CPC classification number: B01J23/63 , B01D53/945 , B01D2255/1025 , B01D2255/2061 , B01D2255/2063 , B01D2255/2068 , B01D2255/2092 , B01D2255/407 , B01D2255/92 , B01D2255/9202 , B01D2255/9205 , B01J23/464 , B01J35/002 , B01J35/023 , B01J37/0036 , B01J37/0215 , B01J37/08
Abstract: When sizes of particles supporting a catalyst metal remain relatively large but sizes of particles not supporting a catalyst metal are minimized among metal oxide particles included in a catalyst coating layer, it is possible to decrease a thickness of the catalyst coating layer while maintaining durability and improve gas diffusibility of the coating layer. Therefore, a thickness of the catalyst coating is decreased without decreasing durability and a catalyst can exhibit high exhaust gas purification performance even under high load conditions.
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