公开(公告)号：US20230302438A1

公开(公告)日：2023-09-28

申请号：US18010525

申请日：2021-06-04

Applicant: Cataler Corporation

Inventor： Ryota Onoe ,  Takahiro Noguchi ,  Tatsuya Ohashi ,  Kohei Takasaki

IPC: B01J35/00 ,  B01J23/46 ,  B01J23/44 ,  B01J23/58 ,  B01J23/10 ,  B01J21/04 ,  B01J35/10 ,  F01N3/28 ,  B01D53/94

CPC classification number: B01J35/0006 ,  B01J23/464 ,  B01J23/44 ,  B01J23/58 ,  B01J23/10 ,  B01J21/04 ,  B01J35/1014 ,  F01N3/2828 ,  B01D53/9468 ,  F01N2370/02 ,  F01N2330/06 ,  B01D2255/908 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/407 ,  B01D2255/9207 ,  B01D2255/2042 ,  B01D2255/9022 ,  B01D2258/01

Abstract: According to a technique disclosed herein, provided is an exhaust gas purification catalyst, which both suppresses OSC when using a new vehicle and maintains OSC during life cycles. The exhaust gas purification catalyst disclosed herein is an exhaust gas purification catalyst includes a substrate, and a catalyst coated layer formed on the surface of the substrate, wherein the catalyst coated layer contains an OSC material having an oxygen storage capacity. The catalyst coated layer includes a Rh layer mainly containing Rh as a catalyst metal, and a Pd/Pt layer mainly containing Pd and/or Pt as a catalyst metal. At least a portion of the Pd/Pt layer in the catalyst coated layer contains, as the OSC material, a low specific surface area OSC material, including a ceria-zirconia composite oxide and having a specific surface area of 40 m2/g or more and 60 m2/g or less.

公开(公告)号：US11454149B2

公开(公告)日：2022-09-27

申请号：US17285290

申请日：2019-10-30

Applicant: CATALER CORPORATION

Inventor： Ryota Onoe ,  Ryo Tasaki ,  Momoko Iwai ,  Yamato Matsushita

IPC: F01N3/021 ,  B01D46/24 ,  B01D53/94 ,  B01J23/63 ,  B01J35/04 ,  F01N3/28 ,  F01N3/022 ,  F01N3/10 ,  F01N3/20

Abstract: Provided is a particulate filter in which a PM collection rate is stably increased. The particulate filter according to the present invention includes a substrate 10 having a wall flow structure having a porous partition wall 16 that partitions an inlet cell and an outlet cell, and a wash coat layer held on surfaces of internal pores of the partition wall. In addition, average filling rates A, B, and C of the wash coat layer measured for each predetermined pore diameter range in the internal pores satisfy specific relationships. Further, the wash coat layer is formed in a region that occupies 50% or more of a thickness of the partition wall, and an amount of a noble metal catalyst carried by the wash coat layer is 0 g/L or more but 0.2 g/L or less.

公开(公告)号：US20220154621A1

公开(公告)日：2022-05-19

申请号：US17439456

申请日：2020-03-10

Applicant: Cataler Corporation

Inventor： Takahiro Noguchi ,  Ryota Onoe ,  Ryo Tasaki ,  Momoko Iwai ,  Yamato Matsushita

IPC: F01N3/28 ,  B01D53/94 ,  B01J23/44 ,  B01J23/42 ,  B01J23/46 ,  B01J23/58 ,  B01J35/00 ,  B01J35/04

Abstract: An exhaust gas purification catalyst for providing removal performance of methane, which is chemically stable includes a substrate that divides cells through which an exhaust gas flows and a catalyst layer that is provided on a surface of the substrate. The catalyst layer includes a palladium layer containing palladium that extends from a first end part which is an end part on the side of the cells into which an exhaust gas flows to a second end part which is an end part on the side from which an exhaust gas flows out, a platinum layer containing platinum that extends from the second end part to the first end part, and a rhodium layer containing rhodium that is laminated on both the palladium layer and the platinum layer.

公开(公告)号：US20210381413A1

公开(公告)日：2021-12-09

申请号：US17285290

申请日：2019-10-30

Applicant: CATALER CORPORATION

Inventor： Ryota Onoe ,  Ryo Tasaki ,  Momoko Iwai ,  Yamato Matsushita

IPC: F01N3/021 ,  F01N3/28 ,  B01D46/24 ,  B01D53/94 ,  B01J23/63 ,  B01J35/04

Abstract: Provided is a particulate filter in which a PM collection rate is stably increased. The particulate filter according to the present invention includes a substrate 10 having a wall flow structure having a porous partition wall 16 that partitions an inlet cell and an outlet cell, and a wash coat layer held on surfaces of internal pores of the partition wall. In addition, average filling rates A, B, and C of the wash coat layer measured for each predetermined pore diameter range in the internal pores satisfy specific relationships. Further, the wash coat layer is formed in a region that occupies 50% or more of a thickness of the partition wall, and an amount of a noble metal catalyst carried by the wash coat layer is 0 g/L or more but 0.2 g/L or less.

公开(公告)号：US10934910B2

公开(公告)日：2021-03-02

申请号：US16490985

申请日：2018-03-16

Applicant: CATALER CORPORATION

Inventor： Haruka Makino ,  Yasutaka Nomura ,  Satoru Inoda ,  Sho Hoshino ,  Ryota Onoe

IPC: F01N3/035 ,  F01N3/022 ,  F01N3/28 ,  B01D53/94

Abstract: An exhaust gas cleaning catalyst that has: a substrate having a wall flow structure, wherein an entry side cell, in which the end part on an exhaust gas inflow side is open, and an exit side cell, in which the end part on the exhaust gas outflow side is open, are divided by a porous dividing wall; and a first catalyst layer that includes a metal catalyst and is disposed within the dividing wall so as to be in contact with the exit side cell and not in contact with the entry side cell, and no catalyst layer is provided in the region in contact with the entry side cell.

公开(公告)号：US10814311B2

公开(公告)日：2020-10-27

申请号：US16329630

申请日：2017-09-19

Applicant: CATALER CORPORATION

Inventor： Sho Hoshino ,  Yuki Takesue ,  Ryota Onoe ,  Taku Miura ,  Takaya Ota

IPC: B01J23/10 ,  B01J23/44 ,  B01J23/63 ,  B01J35/00 ,  B01J35/04 ,  F01N3/022 ,  F01N3/035 ,  F01N3/10 ,  F01N3/24 ,  F01N3/28 ,  B01D53/94 ,  B01J23/46 ,  B01J37/02 ,  F01N3/021

Abstract: An exhaust gas purifying catalyst includes a catalyst layer formed inside a partition wall of a base material having a wall flow structure, and has an upstream-side and a downstream-side catalyst layer. The upstream-side catalyst layer includes Rh and a Ce-containing oxide, and the downstream-side catalyst layer includes Pd and a Ce-containing oxide. The mass of the catalyst layer per unit volume of the base material is from 105 g/L to 210 g/L, the mass of the upstream-side catalyst layer per unit volume in an upstream-side portion is from 50 g/L to 100 g/L, the mass of the downstream-side catalyst layer per unit volume in a downstream-side portion is from 100 g/L to 150 g/L, the Ce amount per unit volume of the base material is from 14 g/L to 35 g/L, and the Ce amount per unit volume in the upstream-side portion is from 5 g/L to 20 g/L.

公开(公告)号：US10688476B2

公开(公告)日：2020-06-23

申请号：US15509976

申请日：2015-09-07

Applicant: CATALER CORPORATION

Inventor： Ryota Onoe ,  Shingo Sakagami ,  Tsuyoshi Ito ,  Yuta Morishita

IPC: F01N3/28 ,  F01N3/10 ,  B01J23/46 ,  B01J23/63 ,  B01D53/94 ,  B01J21/04 ,  B01J23/10 ,  B01J23/44 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01J37/04

Abstract: Provided is an exhaust gas purification catalyst in which the performance of a catalyst metal can be brought out properly, the purification catalyst boasting excellent purification performance during warm-up of an internal combustion engine. The exhaust gas purification catalyst 10 is provided with a substrate 1 and a catalyst layer. A leading end section 1a positioned upstream in the direction of exhaust gas flow (arrow) has a portion in which the flow rate of exhaust gas is relatively high and a portion in which the flow rate of exhaust gas is relatively low during warm-up of the internal combustion engine. The catalyst, layer in the portion of relatively high flow rate of exhaust gas has a high density section 6 in which a noble metal, is supported at relatively high density. The high density section 6 is formed to be shorter than the total length of the exhaust gas purification catalyst 10 from the leading end section 1a in the direction of exhaust gas flow.

公开(公告)号：US10369520B2

公开(公告)日：2019-08-06

申请号：US15545418

申请日：2016-01-08

Applicant: Cataler Corporation

Inventor： Ryota Onoe ,  Tsuyoshi Ito ,  Yuki Takesue ,  Masatoshi Ikebe ,  Chihiro Kasuya ,  Yuta Morishita

IPC: F01N3/10 ,  F01N3/28 ,  B01D53/94 ,  B01J23/63 ,  B01J35/00 ,  B01J35/04

Abstract: The exhaust gas cleaning catalyst according to the present invention is provided with a cylindrical substrate 10 and a catalyst coat layer 20 formed on the surface of the substrate 10. A ratio of the length L in the cylindrical axis direction of the substrate 10 and the diameter D of a cross section orthogonal to the cylindrical axis direction is denoted by (L/D)≤0.8. The coat density of the catalyst coat layer 20 differs between an upstream side portion 10a that includes the exhaust gas inlet-side end 16 of the substrate 10 and a downstream side portion 10b that includes the exhaust gas outlet-side end 18 of the substrate 10. The coat density A in the upstream side portion 10a is lower than the coat density B in the downstream side portion 10b (A

公开(公告)号：US10125649B2

公开(公告)日：2018-11-13

申请号：US15517311

申请日：2015-10-07

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryota Onoe ,  Shingo Sakagami ,  Tsuyoshi Ito ,  Masahiko Takeuchi ,  Naoto Miyoshi ,  Akemi Sato

IPC: F01N3/28 ,  B01D53/94 ,  B01J35/04 ,  F01N3/022 ,  F01N3/035 ,  B01J21/04 ,  B01J23/10 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J35/00 ,  B01J37/02 ,  B01J37/08

Abstract: An exhaust gas purification catalyst that has an excellent exhaust gas purification performance while suppressing pressure loss increases. The exhaust gas purification catalyst is provided with a substrate having a wall-flow structure and having a partition; a first catalyst layer formed, in a region of an interior part of the partition that is in contact with an entrance cell, along the extending direction of the partition from an exhaust gas inflow-side end for less than the total length Lw of the partition; and a second catalyst layer formed, in a region of an interior part of the partition that is in contact with an exit cell, along the extending direction of the partition from the exhaust gas outflow-side end for less than the total length Lw of the partition. The first catalyst layer and the second catalyst layer are configured to partially overlap with each other in the extending direction.

公开(公告)号：US12201965B2

公开(公告)日：2025-01-21

申请号：US18404981

申请日：2024-01-05

Applicant: Cataler Corporation

Inventor： Takahiro Noguchi ,  Ryota Onoe ,  Ryo Tasaki ,  Momoko Iwai ,  Yamato Matsushita

IPC: B01J23/42 ,  B01D53/94 ,  B01J23/44 ,  B01J23/46 ,  B01J35/00 ,  B01J35/10 ,  F01N3/20

Abstract: An exhaust gas purification catalyst provides excellent removal performance of methane, which is chemically stable. Exhaust gas purification catalyst includes a substrate that divides cells through which an exhaust gas flows and a catalyst layer that is provided on a surface of the substrate. The catalyst layer includes a palladium layer containing palladium that extends from a first end part which is an end part on the side into which an exhaust gas in the cells flows to a second end part which is an end part on the side from which an exhaust gas flows out, a platinum layer containing platinum that extends from the second end part to the first end part, and a rhodium layer containing rhodium that is laminated with both the palladium layer and the platinum layer.