公开(公告)号：US20210197175A1

公开(公告)日：2021-07-01

申请号：US17088767

申请日：2020-11-04

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

发明人： Takahiro NISHIO ,  Shogo SHIRAKAWA ,  Masahide MIURA ,  Isao CHINZEI ,  Seiji NAKAHIGASHI ,  Norimichi SHIMANO ,  Hiromi TOGASHI ,  Hiroki NIHASHI ,  Mitsuyoshi OKADA ,  Takashi ONOZUKA ,  Souta AKIYAMA ,  Isao NAITO

IPC分类号： B01J23/46 ,  B01J23/42 ,  B01J23/44

摘要： 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.

公开(公告)号：US20190321806A1

公开(公告)日：2019-10-24

申请号：US16392800

申请日：2019-04-24

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Yoshihiro GOTO ,  Akira MORIKAWA ,  Masahide MIURA ,  Nobuyuki TAKAGI

IPC分类号： B01J23/00 ,  B01D53/94 ,  B01J37/08

摘要： An oxygen storage material comprises a Ce—Zr-Ln-Ti-based composite oxide containing cerium (Ce), zirconium (Zr), a rear-earth element (Ln: excluding cerium), and titanium (Ti), wherein at least part of the rear-earth element and at least part of the titanium are solid-dissolved in a composite oxide of the cerium and the zirconium, and the Ce—Zr-Ln-Ti-based composite oxide has a composition expressed by the following chemical formula (1): Cea-xLnxZrb-yTiyOδ  (1), where a, b, x, and y are numbers satisfying conditions of a=0.4 to 0.6, b=0.4 to 0.6, x=0 to a (exclusive of x=0 and x=a), y=0 to 0.3 (exclusive of y=0), and a+b=1, and δ is a number of 1.7 to 2.2.

公开(公告)号：US20170274347A1

公开(公告)日：2017-09-28

申请号：US15462984

申请日：2017-03-20

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Akira MORIKAWA ,  Yoshihiro GOTO ,  Toshitaka TANABE ,  Masahide MIURA ,  Hiromasa SUZUKI

IPC分类号： B01J20/06 ,  B01J20/30

CPC分类号： B01J20/06 ,  B01D53/94 ,  B01J20/3078 ,  B01J20/3085 ,  B01J23/10 ,  C01F17/0043 ,  C01G25/02 ,  C01P2004/61 ,  C01P2004/82

摘要： An oxygen storage material comprises three pyrochlore-type composite oxides which are a ceria-zirconia composite oxide, a lanthana-zirconia composite oxide, and a ceria-zirconia-lanthana composite oxide, and which coexist together, wherein the oxygen storage material contains: first secondary particles made of the pyrochlore-type ceria-zirconia composite oxide and the pyrochlore-type ceria-zirconia-lanthana composite oxide; and second secondary particles made of the pyrochlore-type lanthana-zirconia composite oxide and the pyrochlore-type ceria-zirconia-lanthana composite oxide.

公开(公告)号：US20220134313A1

公开(公告)日：2022-05-05

申请号：US17435007

申请日：2020-02-12

申请人： CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Hiroki NIHASHI ,  Shogo KAWAMURA ,  Tomomasa AIKAWA ,  Isao NAITO ,  Shogo SHIRAKAWA ,  Masahide MIURA ,  Nobuyuki TAKAGI ,  Norimichi SHIMANO

IPC分类号： B01J23/46 ,  B01J21/04 ,  B01J37/04 ,  B01J37/08 ,  B01J21/06 ,  B01J35/02

摘要： 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.

公开(公告)号：US20180264409A1

公开(公告)日：2018-09-20

申请号：US15534805

申请日：2015-12-11

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

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： B01D53/94 ,  B01J37/02 ,  B01J37/03 ,  C04B35/488

CPC分类号： 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

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.

公开(公告)号：US20160214092A1

公开(公告)日：2016-07-28

申请号：US14916862

申请日：2014-09-03

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Masahide MIURA ,  Tetsuhiro HIRAO ,  Tadashi SUZUKI ,  Toshitaka TANABE

IPC分类号： B01J23/89

CPC分类号： B01J23/894 ,  B01D53/945 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/20715 ,  B01D2255/20738 ,  B01D2255/40 ,  B01D2255/908 ,  B01J23/002 ,  B01J37/0234 ,  B01J37/036 ,  B01J2523/00 ,  Y02A50/2324 ,  Y02T10/22 ,  B01J2523/36 ,  B01J2523/3706 ,  B01J2523/48 ,  B01J2523/842 ,  B01J2523/31 ,  B01J2523/3712 ,  B01J2523/824

摘要： An exhaust gas purification catalyst having a base and a catalytic coating layer formed thereon includes an alumina support, a platinum-group metal, an iron oxide-zirconia-based composite oxide, and a lanthanoid oxide in the same catalytic coating layer.

摘要翻译： 形成有碱和催化涂层的废气净化催化剂在同一催化涂层中包括氧化铝载体，铂族金属，氧化铁 - 氧化锆 - 基复合氧化物和镧系氧化物。

公开(公告)号：US20180250657A1

公开(公告)日：2018-09-06

申请号：US15974060

申请日：2018-05-08

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

发明人： Akira MORIKAWA ,  Kae KONISHI ,  Toshitaka TANABE ,  Akihiko SUDA ,  Masahide MIURA ,  Isao CHINZEI ,  Hiromasa SUZUKI ,  Akiya CHIBA ,  Kosuke IIZUKA

IPC分类号： 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分类号： 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

摘要： 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：US20180021758A1

公开(公告)日：2018-01-25

申请号：US15550148

申请日：2016-03-01

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Naoki KUMATANI ,  Toshitaka TANABE ,  Masahide MIURA

IPC分类号： B01J23/63 ,  B01J37/02 ,  B01J21/06 ,  B01D53/94 ,  B01J35/02

CPC分类号： B01J23/63 ,  B01D53/94 ,  B01D53/9413 ,  B01D53/9422 ,  B01D2255/10 ,  B01D2255/1025 ,  B01D2255/206 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/20715 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/908 ,  B01D2257/502 ,  B01D2257/702 ,  B01J21/066 ,  B01J23/464 ,  B01J35/008 ,  B01J35/02 ,  B01J37/0215 ,  B01J37/0244 ,  C01F17/0043 ,  C01G25/00 ,  C01G25/006 ,  C01G25/02 ,  C01P2002/36 ,  C01P2004/84

摘要： A core-shell support, comprising: a core which comprises at least one oxygen storage/release material selected from the group consisting of ceria-zirconia based solid solutions and alumina-doped ceria-zirconia based solid solutions; and a shell which comprises a rare earth-zirconia based composite oxide represented by a composition formula: (Re1-xCex)2Zr2O7+x (where Re represents a rare earth element, and x represents a number of 0.0 to 0.8) and with which an outside of the core is coated, the rare earth-zirconia based composite oxide comprising crystal particles having a pyrochlore structure, and the rare earth-zirconia based composite oxide having an average crystallite diameter of 3 to 9 nm.

公开(公告)号：US20160250620A1

公开(公告)日：2016-09-01

申请号：US15026760

申请日：2014-10-02

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

发明人： Akira MORIKAWA ,  Kae KONISHI ,  Toshitaka TANABE ,  Akihiko SUDA ,  Masahide MIURA ,  Isao CHINZEI ,  Hiromasa SUZUKI ,  Akiya CHIBA ,  Kosuke IIZUKA

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

CPC分类号： 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

摘要： 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.

摘要翻译： 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

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

发明人： Akira MORIKAWA ,  Kae KONISHI ,  Toshitaka TANABE ,  Akihiko SUDA ,  Masahide MIURA ,  Isao CHINZEI ,  Hiromasa SUZUKI ,  Akiya CHIBA ,  Kosuke IIZUKA

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

CPC分类号： 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

摘要： 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.

摘要翻译： 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。