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.

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：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：US20240165591A1

公开(公告)日：2024-05-23

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: B01J23/46 ,  B01J23/42 ,  B01J23/44 ,  B01J35/00 ,  F01N3/20

CPC classification number: B01J23/464 ,  B01J23/42 ,  B01J23/44 ,  B01J35/19 ,  F01N3/20 ,  F01N2570/10 ,  F01N2570/12 ,  F01N2570/14

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.

公开(公告)号：US20220176354A1

公开(公告)日：2022-06-09

申请号：US17437972

申请日：2020-03-10

Applicant: Cataler Corporation

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

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

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.

公开(公告)号：US12023652B2

公开(公告)日：2024-07-02

申请号：US17437972

申请日：2020-03-10

Applicant: Cataler Corporation

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

IPC: B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J35/00 ,  B01J35/04 ,  F01N3/20

CPC classification number: B01J23/464 ,  B01J23/42 ,  B01J23/44 ,  B01J35/19 ,  F01N3/20 ,  F01N2570/10 ,  F01N2570/12 ,  F01N2570/14

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.

公开(公告)号：US10408102B2

公开(公告)日：2019-09-10

申请号：US15995163

申请日：2018-06-01

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takahiro Noguchi ,  Makoto Tsuji ,  Hiroto Imai ,  Yusuke Shimmyo ,  Hiroyuki Matsubara

IPC: B01J21/04 ,  F01N3/10 ,  F01N3/28 ,  B01J37/02 ,  B01J21/08 ,  B01J23/63 ,  B01J21/06 ,  F01N3/20

Abstract: An oxidation catalyst device for exhaust gas purification, having a first catalyst coating layer on the exhaust gas flow's upstream side, second catalyst coating layer of an upper layer on exhaust gas flow's downstream side, and third catalyst coating layer of a lower layer on exhaust gas flow's downstream side, on a substrate, wherein the weight ratio of platinum to palladium in the first catalyst coating layer is 0.75 to 4.50, weight ratio of platinum to palladium in second catalyst coating layer is greater than 4.50 to 25.0, weight ratio of platinum to palladium in third catalyst coating layer is 0.12 or less, the length of first catalyst coating layer is 8% to 55% of the substrate's length, length of second catalyst coating layer is 45% to 95% of the substrate's length, and length of third catalyst coating layer is 45% to 95% of the substrate's length.