公开(公告)号：US10076725B2

公开(公告)日：2018-09-18

申请号：US15550078

申请日：2016-02-16

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryota Onoe ,  Shingo Sakagami ,  Yasutaka Nomura ,  Yuta Morishita ,  Junji Kuriyama ,  Hiroshi Sekine ,  Daisuke Ochiai ,  Naoto Miyoshi ,  Masahiko Takeuchi ,  Akemi Sato

IPC: B01J23/10 ,  B01J23/44 ,  B01J23/46 ,  B01J23/63 ,  B01J35/00 ,  B01J35/04 ,  B01D53/94 ,  F01N3/10 ,  F01N3/08 ,  F01N3/28

CPC classification number: B01D53/945 ,  B01D53/94 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/9022 ,  B01D2255/908 ,  B01D2255/9155 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/04 ,  F01N3/0222 ,  F01N3/035 ,  F01N3/0864 ,  F01N3/10 ,  F01N3/281 ,  F01N2330/02 ,  F01N2510/0682 ,  F01N2510/0684

Abstract: A wall-flow-type exhaust gas purification catalyst with an oxygen storage material that has an increased OSC and exhibits its OSC without a compromise provides an exhaust gas purification catalyst having a wall-flow-type substrate, a first catalytic layer and a second catalytic layer. The first catalytic layer is provided to an internal portion of a partition wall in contact with an entrance cell. The second catalytic layer is provided to an internal portion of a partition wall in contact with an exit cell. Each of the first and second catalytic layers has an oxygen storage material. The ratio (D1/D2) of the coating density D1 of the first catalytic layer to the coating density D2 of the second catalytic layer is 1.1 to 1.8.

公开(公告)号：US11473472B2

公开(公告)日：2022-10-18

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: B01J35/04 ,  F01N3/28 ,  B01D53/94 ,  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：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：US10201805B2

公开(公告)日：2019-02-12

申请号：US15518086

申请日：2015-10-06

Applicant: CATALER CORPORATION

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

IPC: B01J23/00 ,  B01J23/10 ,  B01J23/63 ,  B01D53/94 ,  B01J35/04 ,  F01N3/10 ,  F01N3/28 ,  F01N3/02 ,  F01N3/022 ,  F01N3/023 ,  F01N3/035 ,  B01J35/00 ,  B01J35/10 ,  B01J37/02 ,  F01N3/08

Abstract: A exhaust gas purification apparatus is provided with; a substrate having a wall-flow structure and including entry-side cells, exit-side cells, and a porous partition; a first catalyst region formed in small diameter pores having relatively small pore diameters among internal pores in the partition; and a second catalyst region formed in large diameter pores having relatively large pore diameters among the internal pores in the partition. The first catalyst region contains a support and any one or two species of precious metal selected from Pt, Pd, and Rh loaded on the support, while the second catalyst region contains a support and any one or two species of precious metal selected from Pt, Pd, and Rh loaded on the support and other than at least the precious metal present in the first catalyst region.

公开(公告)号：US11364489B2

公开(公告)日：2022-06-21

申请号：US16649453

申请日：2018-10-12

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Haruka Makino ,  Yasutaka Nomura ,  Satoru Inoda ,  Kenji Nakajima ,  Naoto Miyoshi ,  Takeru Yoshida ,  Akemi Sato

IPC: B01J23/56 ,  B01J35/00 ,  B01D53/94 ,  F01N3/28 ,  B01J35/04

Abstract: An exhaust gas purifying catalyst includes: a wall-flow structure substrate including an inlet cell, an outlet cell, and a porous partition; a first catalyst layer formed inside the partition such that a thickness of the first catalyst layer is between 40% and 60%, inclusive, of an overall thickness Tw of the partition; and a second catalyst layer formed inside the partition such that the second catalyst layer extends across an entire region of the partition in a thickness direction thereof.

公开(公告)号：US10344655B2

公开(公告)日：2019-07-09

申请号：US15518011

申请日：2015-10-07

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryota Onoe ,  Shingo Sakagami ,  Tsuyoshi Ito ,  Yuta Morishita ,  Masahiko Takeuchi ,  Naoto Miyoshi ,  Akemi Sato ,  Daisuke Ochiai

IPC: B01D53/94 ,  B01J35/04 ,  B01J23/46 ,  B01J37/02 ,  F01N3/22 ,  F01N3/28 ,  F01N3/035 ,  F01N3/022

Abstract: An exhaust gas purification catalyst having an excellent exhaust partition ability while reducing the increase in pressure loss. Exhaust gas purification catalyst includes a substrate having a wall-flow structure with partition wall, upstream coating section formed in portions of partition wall facing entrance cell, from exhaust inlet-side end in the extending direction of partition wall, and downstream coating section formed in portions of partition wall facing exit cell, from exhaust outlet-side end in the extending direction, having a length shorter than the entire length Lw of the partition wall. In downstream coating section, a catalytic metal is concentrated in the surface layer in contact with exit cell.

公开(公告)号：US10183253B2

公开(公告)日：2019-01-22

申请号：US15517978

申请日：2015-10-06

Applicant: CATALER CORPORATION

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

IPC: B01D53/94 ,  B01J23/63 ,  B01J35/04 ,  B01J35/00 ,  F01N3/035 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  F01N3/28

Abstract: The exhaust gas purification device is provided with a wall flow structure substrate that has an entry-side cell, an exit-side cell and a porous partition, first catalyst parts which are formed in small pores having a relatively small pore diameter among internal pores in the partition, and second catalyst parts which are formed in large pores having a relatively large pore diameter among the internal pores in the partition. The first catalyst parts and the second catalyst parts each contain a carrier and at least one type of noble metal from among Pt, Pd and Rh supported on the carrier. The noble metal content in the first catalyst parts is smaller than the noble metal content in the second catalyst parts per 1 liter of substrate volume.

公开(公告)号：US10159935B2

公开(公告)日：2018-12-25

申请号：US15517990

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: B01D53/94 ,  B01J35/04 ,  B01J37/02 ,  F01N3/28 ,  F01N3/022

Abstract: An exhaust gas purification catalyst having an excellent exhaust gas purification ability while reducing the increase in pressure loss. Exhaust gas purification catalyst includes entrance cell, exit cell, and a wall-flow substrate having partition wall to separate these cell, a catalytic layer formed from exhaust inlet-side ends in the extending direction in sections of the interior of partition wall facing entrance cell, and a catalytic layer formed on the surface of partition wall facing exit cell from exhaust outlet-side ends in the extending direction of partition wall, having a length shorter than the entire partition wall length.

公开(公告)号：US11187129B2

公开(公告)日：2021-11-30

申请号：US16647004

申请日：2018-09-11

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yasutaka Nomura ,  Satoru Inoda ,  Naoto Miyoshi ,  Akemi Sato

IPC: F01N3/28 ,  F01N3/035

Abstract: An exhaust gas purification including: a base of wall flow structure having inlet side cells wherein an end on the exhaust gas inflow side is open and outlet side cells wherein an end on the exhaust gas outflow side is open, and a porous partition wall that partitions the side cells; and first and second catalyst layers disposed in the interior of the porous partition wall so as to be in contact with the side cells, wherein either of the catalyst layers contains an oxidation catalyst but does not contain a reduction catalyst, and the other contains the reduction catalyst but does not contain the oxidation catalyst; and a ratio of the lengths of the catalyst layers differs between a surface of the porous partition wall on the side in contact with the inlet side cells and a surface on the side in contact with the outlet side cells.

公开(公告)号：US10357744B2

公开(公告)日：2019-07-23

申请号：US15515830

申请日：2015-10-06

Applicant: CATALER CORPORATION

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

IPC: F01N3/28 ,  B01D53/94 ,  F01N13/00 ,  B01J23/63 ,  B01J35/00 ,  B01J35/04 ,  F01N3/035 ,  B01J37/02 ,  B01J23/40

Abstract: An exhaust gas purification device of the present invention is provided with: a substrate of wall flow structure having an inlet cell, an outlet cell and a porous partition wall; an upstream catalyst layer, provided inside the partition wall and disposed in an upstream portion of the substrate including an exhaust gas inflow end section; and a downstream catalyst layer, provided inside the partition wall and disposed in a downstream portion of the substrate including an exhaust gas outflow end section. The upstream catalyst layer and the downstream catalyst layer each contain a carrier and at least one noble metal from among Pt, Pd and Rh, supported on the carrier. The noble metal in the upstream catalyst layer and the noble metal in the downstream catalyst layer are different from each other.