公开(公告)号：US20210324777A1

公开(公告)日：2021-10-21

申请号：US17231474

申请日：2021-04-15

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

Inventor： Koji SUGIURA ,  Hiromasa NISHIOKA ,  Naoto MIYOSHI ,  Akemi SATOU ,  Keisuke MURAWAKI ,  Masatoshi IKEBE ,  Takaya OTA ,  Ryota NAKASHIMA ,  Hirotaka ORI

IPC: F01N3/28 ,  B01D53/94 ,  B01J35/04 ,  B01J35/10

Abstract: An exhaust gas control apparatus includes a honeycomb substrate and an inlet cell-side catalyst layer. The honeycomb substrate includes a porous partition wall that defines a plurality of cells extending from an inlet-side end face to an outlet-side end face. The cells include an inlet cell and an outlet cell that are adjacent to each other with the partition wall therebetween. The inlet cell is open at its inlet-side end and is sealed at its outlet-side end. The outlet cell is sealed at its inlet-side end and is open at its outlet-side end. The inlet cell-side catalyst layer is provided on a surface on the inlet cell side of the partition wall and extends from an inlet-side end of the partition wall. Porosity of the inlet cell-side catalyst layer is in a specific range.

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：US20210033009A1

公开(公告)日：2021-02-04

申请号：US16903473

申请日：2020-06-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

Inventor： Koji SUGIURA ,  Hiromasa NISHIOKA ,  Naoto MIYOSHI ,  Akemi SATO ,  Masatoshi IKEBE ,  Ryota NAKASHIMA ,  Yasutaka NOMURA ,  Hirotaka ORI

IPC: F01N3/022 ,  F01N3/10 ,  F01N13/18 ,  F01N3/28

Abstract: An exhaust gas control apparatus includes: a honeycomb substrate including an inflow cell and an outflow cell adjacent to each other with a partition wall sandwiched between the inflow cell and the outflow cell; a first sealing part provided at an outflow side end of the inflow cell, and a second sealing part provided at an inflow side end of the outflow cell; and a catalyst layer provided on the partition wall, and at least one of the first sealing part and the second sealing part is an OSC material-containing sealing part containing an OSC material and a sealant, and a concentration of the OSC material in the OSC material-containing sealing part is uniform in an extending direction.

公开(公告)号：US20180023444A1

公开(公告)日：2018-01-25

申请号：US15547589

申请日：2016-01-25

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshinori SAITO ,  Hirotaka ORI ,  Shingo SAKAGAMI ,  Isao CHINZEI ,  Takeru YOSHIDA ,  Yuki AOKI

IPC: F01N3/28 ,  F01N3/10 ,  B01J23/40

CPC classification number: F01N3/2803 ,  B01D53/86 ,  B01D53/945 ,  B01D2255/1023 ,  B01D2255/65 ,  B01D2255/9022 ,  B01D2255/9032 ,  B01D2255/908 ,  B01J23/40 ,  B01J23/44 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/0073 ,  B01J37/0244 ,  F01N3/101 ,  F01N2330/60 ,  F01N2370/02 ,  F01N2510/0682 ,  F01N2510/0684 ,  Y02T10/22

Abstract: The exhaust gas cleaning catalyst according is provided with a substrate and a catalyst coat layer formed on a surface of the substrate. The catalyst coat layer is formed as a laminate structure having an upper layer and a lower layer. The upper layer is a Pd-free layer that does not contain Pd, and the lower layer is a Pd-containing layer. In addition, when a region of the lower layer that corresponds to 20% of the length of the exhaust gas cleaning catalyst from the exhaust gas inlet side end towards the exhaust gas outlet side of the exhaust gas cleaning catalyst is divided into four equal regions to be each 5% of the length, the relationship A>B>C is satisfied, where A, B, and C represents the Pd content in the first, second, and third region respectively.

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

IPC: B01J23/63 ,  B01D53/94 ,  B01J35/02 ,  B01J35/10 ,  B01J37/02 ,  B01J37/08 ,  B01J35/04 ,  F01N3/28

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.

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

IPC: B01J23/63 ,  B01J37/00 ,  B01J37/02 ,  B01J35/04

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.

公开(公告)号：US20170234185A1

公开(公告)日：2017-08-17

申请号：US15426508

申请日：2017-02-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takeshi NOBUKAWA ,  Kazunari SAWADA ,  Hirotaka ORI

IPC: F01N3/10 ,  F01N3/20

CPC classification number: F01N3/101 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/2066 ,  F01N11/00 ,  F01N2430/06 ,  F01N2510/0684 ,  F01N2550/02 ,  F01N2900/04 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/47

Abstract: An object of the present disclosure is to provide an exhaust gas purification catalyst device; an exhaust gas purification system; and a method for detecting deterioration of the above device.The exhaust gas purification catalyst device includes a substrate, a first catalyst layer containing Pd and formed on the substrate, and a second catalyst layer formed on the first layer. Regarding the above device, ceria, Pd, and Rh are contained in a mixed state in the second layer; in the first and second layers, the total mass of ceria having a fluorite-type structure per 1 L volume of the substrate is 16.0 g or less; and in the second layer, the mass of Pd per 1 L volume of the substrate is 0.32 g or more.

公开(公告)号：US20200030780A1

公开(公告)日：2020-01-30

申请号：US16603380

申请日：2018-04-09

Applicant: CATALER CORPORATION

Inventor： Shunsuke Oishi ,  Shogo KAWAMURA ,  Takahiro NAGATA ,  Hirotaka ORI ,  Minoru ITOU

IPC: B01J27/053 ,  B01J35/04 ,  B01J35/00 ,  B01J23/46 ,  B01J37/02 ,  B01J37/08 ,  B01D53/94 ,  F01N3/28

Abstract: The present invention provides an exhaust gas purification catalyst including an alkaline earth metal supported in a highly dispersed state on a porous carrier. A catalyst layer of the exhaust gas purification catalyst provided by the invention has an alkaline earth metal-supporting region including a porous carrier, a catalyst metal belonging to the platinum group, and a sulfate of at least one type of alkali earth metal supported on the porous carrier. In a cross-section of this region, a Pearson correlation coefficient RAe/M is at least 0.5 as calculated using α and β for each pixel obtained by carrying out area analysis by FE-EPMA under conditions of pixel size of 0.34 μm×0.34 μm, and measured pixel number 256×256, and by measuring the characteristic X-ray intensity (α: cps) of the alkaline earth metal element (Ae) and the characteristic X-ray intensity (β: cps) of the main constituent element of the inorganic compound constituting the porous carrier for each pixel.

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.