公开(公告)号：US09409152B2

公开(公告)日：2016-08-09

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： B01J23/00 ,  B01J23/02 ,  B01J23/08 ,  B01J23/10 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/56 ,  B01J23/70 ,  B01J23/72 ,  B01J20/00 ,  B01J21/04 ,  B01J21/06 ,  B01J23/63 ,  B01J35/00 ,  B01J35/02 ,  B01J35/10 ,  B01J37/00 ,  B01J23/83 ,  B01J37/04 ,  B01J37/08 ,  B01D53/94

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：US10378409B2

公开(公告)日：2019-08-13

申请号：US15480988

申请日：2017-04-06

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Jota Yamauchi ,  Takahiro Hayashi ,  Masaya Ibe ,  Satoru Katoh ,  Tsuyoshi Hamaguchi ,  Toshiyuki Tanaka

IPC分类号： F01N3/20 ,  B01J23/63 ,  B01D53/94 ,  F01N3/10 ,  B01J37/00 ,  B01J37/02 ,  F01N3/28

摘要： An object of the present disclosure is to provide an exhaust gas purification catalyst demonstrating superior storage of NOx contained in exhaust gas.The exhaust gas purification catalyst of the present disclosure has a substrate, a first catalyst layer containing a catalytic metal for NOx reduction and a NOx storage material and formed on the substrate, and a second catalyst layer containing a catalytic metal for NOx oxidation and formed on the first catalyst layer. In the exhaust gas purification catalyst of the present disclosure, the value obtained by dividing the volume of all large pores having a pore volume of 1000 μm3 or more by the total volume of all medium pores of having a pore volume of 10 μm3 to 1000 μm3 in the second catalyst layer is 2.44 or less.

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):








α
=




∑



j
=
0


N
-
1


⁢


∑



i
=
0


M
-
1


⁢

(


(


I
⁡
(

i
,
j

)

-

I
ave


)

⁢

(


T
⁡
(

i
,
j

)

-

T
ave


)


)







∑



j
=
0


N
-
1


⁢


∑



i
=
0


M
-
1


⁢


(


I
⁡
(

i
,
j

)

-

I
ave


)

2


-



∑



j
=
0


N
-
1


⁢


∑



i
=
0


M
-
1


⁢


(


T
⁡
(

i
,
j

)

-

T
ave


)

2






,




(
1
)







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

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：US20210129116A1

公开(公告)日：2021-05-06

申请号：US17060830

申请日：2020-10-01

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Jota Yamauchi ,  Toshihisa Yamauchi ,  Yohei Kinoshita ,  Takahiro Hayashi

IPC分类号： B01J23/44 ,  B01J23/10 ,  B01J35/02 ,  B01J37/02

摘要： A method is provided for producing a coating layer for an exhaust gas purification catalyst device that can inhibit detachment of the coating layer when the coating layer is formed on the exhaust gas purification catalyst device. The method comprises covering a substrate with a slurry that comprises carrier particles and a dispersing medium, to form a slurry layer on the substrate, and drying and firing the slurry layer to form a coating layer, wherein the carrier particles have a median diameter (D50) of 4.00 μm or smaller, the dispersing medium comprises water and a water-soluble alcohol, and the amount of the water-soluble alcohol in the slurry is 0.50 mass % to 12.00 mass % with respect to the slurry.