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：US10071368B2

公开(公告)日：2018-09-11

申请号：US15550252

申请日：2016-02-16

Applicant: CATALER CORPORATION

Inventor： Ryota Onoe ,  Shingo Sakagami ,  Yasutaka Nomura ,  Yuta Morishita ,  Junji Kuriyama ,  Hiroshi Sekine

IPC: B01J23/10 ,  B01J23/44 ,  B01J23/46 ,  B01J23/63 ,  B01J35/00 ,  B01J35/04 ,  B01D53/94 ,  F01N13/08 ,  F01N3/28

CPC classification number: B01J35/0006 ,  B01D53/94 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/9022 ,  B01D2255/9155 ,  B01J23/63 ,  B01J35/04 ,  B01J37/02 ,  F01N3/035 ,  F01N3/10 ,  F01N3/24 ,  F01N3/28 ,  F01N13/08 ,  F01N2250/02 ,  F01N2260/06 ,  F01N2370/02 ,  F01N2510/068 ,  F01N2510/0682 ,  F01N2510/0684

Abstract: An exhaust gas purification catalyst capable of stably maintaining and exhibiting excellent catalytic performance includes 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. The ratio (D2/D1) of the coating density D2 of the second catalytic layer to the coating density D1 of the first catalytic layer is 1.01 to 1.4.