公开(公告)号：US20170348674A1

公开(公告)日：2017-12-07

申请号：US15534841

申请日：2015-12-11

Applicant: TOYOTA JIDOSHIA KABUSHIKI KAISHA ,  CATALER CORPORATION

Inventor： 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: B01J23/63 ,  B01J37/03 ,  B01J37/08 ,  F01N3/10 ,  B01J35/04 ,  B01J23/00 ,  B01J35/00 ,  B01J37/02 ,  B01D53/94

Abstract: 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.

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.

公开(公告)号：US20230201770A1

公开(公告)日：2023-06-29

申请号：US17925982

申请日：2021-06-08

Applicant: CATALER CORPORATION

Inventor： Toshio YAMAMOTO ,  Akira MORIKAWA ,  Satoru KATOH ,  Masahide MIURA ,  Nobusuke KABASHIMA ,  Nobuyuki TAKAGI ,  Takashi ONOZUKA ,  Mitsuyoshi OKADA

IPC: B01D53/94 ,  B01J23/40 ,  B01J23/63 ,  B01J35/02 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  F01N3/28

CPC classification number: B01D53/9413 ,  B01J23/40 ,  B01J23/63 ,  B01J35/023 ,  B01J35/1076 ,  B01J35/108 ,  B01J37/0018 ,  B01J37/0036 ,  B01J37/0215 ,  B01J37/0228 ,  B01J37/0248 ,  F01N3/28 ,  B01D2255/1025 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/407 ,  B01D2255/9202 ,  B01D2255/9205

Abstract: A catalyst for purification of exhaust gas including a substrate, and a catalyst coat layer which is formed on a surface of the substrate and contains catalyst particles, wherein the catalyst coat layer has an average thickness ranging 25 to 150 μm, a void fraction, as determined by scanning electron microscope observation of a cross-section of the catalyst coat layer, ranging 1.5 to 8.0% by volume, 60 to 90% by volume of all voids in the catalyst coat layer are high-aspect ratio pores which have equivalent circle diameters ranging 2 to 50 μm in a cross-sectional image of a cross-section of the catalyst coat layer perpendicular to a flow direction of exhaust gas in the substrate, and which ratios of 5 or higher, the high-aspect ratio pores have an average aspect ratio ranging 10 to 50, and a noble metal is supported on the entire catalyst coat layer.

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.

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

IPC: B01J23/10 ,  B01J35/02 ,  B01J37/02 ,  B01J23/00 ,  B01J37/08

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。

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

IPC: B01J23/10 ,  B01J37/12 ,  B01J37/16 ,  B01J35/02 ,  B01J37/00

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。

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

IPC: B01J23/10 ,  B01J37/16 ,  B01J37/12 ,  B01J37/00

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。