公开(公告)号：US20150290621A1

公开(公告)日：2015-10-15

申请号：US14439940

申请日：2013-11-14

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Masahide Miura ,  Akira Morikawa ,  Toshitaka Tanabe

IPC分类号： B01J23/10 ,  B01J35/00 ,  B01J35/02 ,  B01J21/06

CPC分类号： B01J23/10 ,  B01D53/9445 ,  B01D2255/2065 ,  B01D2255/908 ,  B01J21/066 ,  B01J35/0006 ,  B01J35/002 ,  B01J35/02 ,  B01J35/023 ,  B01J37/0236 ,  B01J37/031 ,  B01J37/14 ,  B01J37/16 ,  C01G25/00 ,  C01P2002/36 ,  C01P2004/04 ,  Y02T10/22

摘要： The object of the present invention is to provide an oxygen storage material used for an exhaust gas purifying catalyst that is superior in stability at high temperatures. The composite oxide material of the invention comprises crystalline particles of a ceria-zirconia composite oxide with a pyrochlore structure and crystals of a ceria-zirconia composite oxide with a fluorite structure on the particle surface, in which the crystals of the ceria-zirconia composite oxide with a fluorite structure contains zirconia in a larger amount than that of ceria, and such crystals are integrated with the crystalline particles of the ceria-zirconia composite oxide with a pyrochlore structure. The composite oxide material of the invention has high oxygen storage capacity that is less likely to decrease at high temperatures.

摘要翻译： 本发明的目的是提供一种在高温下的稳定性优异的废气净化用催化剂用的储氧材料。 本发明的复合氧化物材料包括具有烧绿石结构的二氧化铈 - 氧化锆复合氧化物和颗粒表面上具有萤石结构的二氧化铈 - 氧化锆复合氧化物晶体的结晶颗粒，其中二氧化铈 - 氧化锆复合氧化物 萤石结构含有比二氧化铈更大量的氧化锆，并且这种晶体与具有烧绿石结构的二氧化铈 - 氧化锆复合氧化物的结晶颗粒结合。 本发明的复合氧化物材料具有高的储氧能力，在高温下不太可能降低。

公开(公告)号：US10913051B2

公开(公告)日：2021-02-09

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 ,  C01G25/00 ,  C04B35/488 ,  C04B35/50 ,  C04B35/626 ,  B01J37/16 ,  B01J23/00 ,  B01J23/63 ,  B01J35/00 ,  B01J35/02 ,  B01J37/00 ,  B01D53/94 ,  B01J37/03 ,  B01J37/14 ,  B01J37/12 ,  B01J37/08

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：US09868087B2

公开(公告)日：2018-01-16

申请号：US15468956

申请日：2017-03-24

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Naoki Kumatani ,  Toshitaka Tanabe ,  Akira Morikawa ,  Masahide Miura ,  Hiromasa Suzuki

IPC分类号： B01D53/94 ,  B01J21/04 ,  B01J21/06 ,  B01J23/10 ,  B01J23/63 ,  B01J35/00 ,  B01J37/00 ,  B01J37/02 ,  B01J37/08 ,  B01J21/12

CPC分类号： B01D53/9413 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/908 ,  B01D2255/9202 ,  B01D2255/9207 ,  B01J23/10 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/002 ,  B01J35/0073 ,  B01J37/0009 ,  B01J37/0036 ,  B01J37/0201 ,  B01J37/0215 ,  B01J37/0244 ,  B01J37/0248 ,  B01J37/03 ,  B01J37/08 ,  B01J37/14 ,  B01J37/16 ,  B01J2523/00 ,  B01J2523/31 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/824 ,  B01J2523/3718 ,  B01J2523/822

摘要： A core-shell oxide material comprises: a core which comprises a ceria-zirconia based solid solution powder having at least one ordered phase of a pyrochlore phase and a κ phase; and a shell which comprises an alumina based oxide disposed on at least a portion of a surface of the core.

公开(公告)号：US10668449B2

公开(公告)日：2020-06-02

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 ,  B01J23/10 ,  B01J21/06 ,  B01J37/08 ,  B01D53/94 ,  B01J35/02 ,  B01J35/10

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：US20190321807A1

公开(公告)日：2019-10-24

申请号：US16392823

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： B01J23/83 ,  B01J23/00 ,  B01J37/04 ,  B01J37/08

摘要： An oxygen storage material comprises a La—Co—Al-based composite oxide containing lanthanum, cobalt and aluminum. The La—Co—Al-based composite oxide is in a form in which at least part of the aluminum is solid-dissolved in a La—Co composite oxide having a perovskite structure, and has a composition expressed by the following chemical formula (1): LaCoyAlxOδ  (1) where x and y are numbers satisfying conditions of 0

公开(公告)号：US11969712B2

公开(公告)日：2024-04-30

申请号：US17979571

申请日：2022-11-02

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Naoki Kumatani ,  Akira Morikawa ,  Masaoki Iwasaki ,  Miho Hatanaka ,  Taizo Yoshinaga ,  Masahide Miura ,  Takahiro Hayashi

IPC分类号： B01J21/04 ,  B01D53/94 ,  B01J21/06 ,  B01J23/10 ,  B01J23/44 ,  B01J23/63 ,  B01J35/00 ,  B01J35/23 ,  B01J35/30 ,  B01J37/02

CPC分类号： B01J23/63 ,  B01D53/94 ,  B01J23/10 ,  B01J35/23 ,  B01J35/394 ,  B01J37/0221 ,  B01J37/0228 ,  B01J37/0244 ,  B01D2255/1023 ,  B01D2255/2065 ,  B01D2255/908

摘要： A catalyst for purification of exhaust gas in which Pd-based nanoparticles and ceria nanoparticles are supported on a composite metal oxide support containing alumina, ceria, and zirconia, wherein a molar ratio (Ce/Pd) of Ce and Pd supported on the support is 1 to 8, a proximity α between Pd and Ce is 0.15 to 0.50, wherein the proximity α is determined, based on Pd and Ce distribution maps in an element mapping image of energy dispersive X-ray analysis, by the following formula (1):








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a Pd dispersity after a heat-resistance test at 1050° C. for 25 hours is 0.8% or more.

公开(公告)号：US11559786B2

公开(公告)日：2023-01-24

申请号：US16595619

申请日：2019-10-08

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Akira Morikawa ,  Masahide Miura ,  Nobuyuki Takagi

IPC分类号： B01J23/10 ,  B01J37/04 ,  B01J37/03 ,  B01J37/00 ,  B01J37/06 ,  B01J37/02 ,  B01J37/08 ,  B01J37/16 ,  B01J37/12 ,  B01D53/94 ,  B01J35/02 ,  F01N3/10

摘要： An oxygen storage material including a ceria-zirconia based composite oxide containing a composite oxide of ceria and zirconia, wherein the ceria-zirconia based composite oxide comprises at least one rare-earth element selected from the group consisting of lanthanum, yttrium, and neodymium, and an amount of the rare-earth element(s) contained in total is 1 to 10% by atom in terms of element relative to a total amount of cerium and zirconium in the ceria-zirconia based composite oxide, 60 to 85% by atom of the entire amount of the rare-earth element(s) is contained in a near-surface upper-layer region extending from a surface of each primary particle of the ceria-zirconia based composite oxide to a depth of 50 nm in the primary particle, and 15 to 40% by atom of the entire amount of the rare-earth element(s) is contained in a near-surface lower-layer region extending from a depth of 50 nm to a depth of 100 nm in the primary particle, a content ratio of cerium and zirconium in the ceria-zirconia based composite oxide is in a range of 40:60 to 60:40 in terms of an atomic ratio ([Ce]:[Zr]), and the ceria-zirconia based composite oxide has an intensity ratio {I(14/29) value} between a diffraction line at 2θ=14.5° and a diffraction line at 2θ=29° which satisfies the following condition: I(14/29) value≥0.032, where the intensity ratio {I(14/29) value} is determined from an X-ray diffraction pattern using CuKα obtained by an X-ray diffraction measurement conducted after heating in air under a temperature condition of 1100° C. for 5 hours.

公开(公告)号：US10112180B2

公开(公告)日：2018-10-30

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 ,  C01G25/00 ,  C04B35/488 ,  B01D53/94 ,  C04B35/626 ,  B01J37/03 ,  B01J37/04 ,  B01J23/63 ,  B01J23/66 ,  B01J35/00 ,  B01J35/02 ,  B01J37/02 ,  B01J23/00 ,  C01F17/00 ,  B01J37/08 ,  B01J37/00

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.

公开(公告)号：US20150266004A1

公开(公告)日：2015-09-24

申请号：US14410345

申请日：2013-06-20

申请人： KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Naoki Kumatani ,  Akira Morikawa ,  Kae Konishi ,  Kimitoshi Sato ,  Toshitaka Tanabe ,  Akihiko Suda ,  Masahide Miura ,  Isao Chinzei ,  Hiromasa Suzuki ,  Takeshi Nobukawa ,  Takahiro Hayashi

IPC分类号： B01J23/10 ,  B01J37/08 ,  B01J35/10 ,  B01J37/04 ,  B01J23/63 ,  B01J23/83

CPC分类号： B01J23/10 ,  B01D53/945 ,  B01D2255/1023 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/20761 ,  B01D2255/2092 ,  B01D2255/908 ,  B01D2255/9205 ,  B01D2255/9207 ,  B01J21/04 ,  B01J21/066 ,  B01J23/002 ,  B01J23/44 ,  B01J23/63 ,  B01J23/83 ,  B01J35/0013 ,  B01J35/002 ,  B01J35/006 ,  B01J35/023 ,  B01J35/1009 ,  B01J35/1014 ,  B01J35/1038 ,  B01J35/1042 ,  B01J35/1047 ,  B01J35/1052 ,  B01J35/1057 ,  B01J35/1061 ,  B01J35/1066 ,  B01J35/1071 ,  B01J35/1076 ,  B01J35/108 ,  B01J37/0063 ,  B01J37/0201 ,  B01J37/04 ,  B01J37/08 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/31 ,  B01J2523/36 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/824 ,  B01J2523/17

摘要： A catalyst support for purification of exhaust gas includes a porous composite metal oxide, the porous composite metal oxide containing alumina, ceria, and zirconia and having an alumina content ratio of from 5 to 80% by mass, wherein after calcination in the air at 1100° C. for 5 hours, the porous composite metal oxide satisfies a condition such that standard deviations of content ratios (as at % unit) of aluminum, cerium and zirconium elements are each 19 or less with respect to 100 minute areas (with one minute area being 300 nm in length×330 nm in width) of the porous composite metal oxide, the standard deviation being determined by energy dispersive X-ray spectroscopy using a scanning transmission electron microscope equipped with a spherical aberration corrector.

摘要翻译： 用于净化废气的催化剂载体包括多孔复合金属氧化物，含有氧化铝，二氧化铈和氧化锆的多孔复合金属氧化物，其氧化铝含量比为5-80质量％，其中在空气中煅烧1100 ℃下，多孔复合金属氧化物满足以下条件：相对于100分钟区域（1分钟），铝，铈和锆元素的含量比（以％为单位）的标准偏差分别为19以下 多孔复合金属氧化物的长度为300nm×宽度为330nm的区域），使用配备有球面像差校正器的扫描透射型电子显微镜，通过能量色散X射线光谱法测定标准偏差。

公开(公告)号：US10220368B2

公开(公告)日：2019-03-05

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

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.