公开(公告)号：US20180028972A1

公开(公告)日：2018-02-01

申请号：US15550070

申请日：2016-02-16

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ichiro KITAMURA ,  Keiichi NARITA ,  Yasutaka NOMURA ,  Ryota ONOE ,  Yuta MORISHITA ,  Junji KURIYAMA ,  Hiroshi SEKINE ,  Akihito INOUE ,  Daisuke OCHIAI ,  Jun SAWADA ,  Naoto MIYOSHI ,  Masahiko TAKEUCHI ,  Akemi SATO ,  Atsushi TANAKA

IPC: B01D53/94 ,  B01J35/04 ,  B01J37/02 ,  B01J23/63

CPC classification number: B01D53/94 ,  B01J23/63 ,  B01J35/04 ,  B01J37/02

Abstract: Provided is an exhaust gas purification catalyst that combines reduction of pressure loss and enhancement of purification performance. This invention provides an exhaust gas purification catalyst comprising a wall-flow-type substrate and first and second catalytic layers. The first catalytic layer is provided to the interior of a partition wall, in contact with an entrance cell, from an exhaust inlet-side end in the running direction, having a length L1 less than Lw. The second catalytic layer is provided to the interior of a partition wall, in contact with an exit cell, from an exhaust outlet-side end in the running direction, having a length L2 less than Lw. An internal portion of partition wall in contact with entrance cell has a substrate-exposing segment near the exhaust outlet-side end.

公开(公告)号：US20180001308A1

公开(公告)日：2018-01-04

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

CPC classification number: B01J23/63 ,  B01D53/94 ,  B01D53/945 ,  B01D53/9454 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/9032 ,  B01D2255/908 ,  B01D2255/91 ,  B01D2255/9155 ,  B01D2255/9202 ,  B01J35/0006 ,  B01J35/04 ,  B01J35/1076 ,  B01J37/0244 ,  F01N3/02 ,  F01N3/022 ,  F01N3/023 ,  F01N3/035 ,  F01N3/0842 ,  F01N3/0864 ,  F01N3/10 ,  F01N3/28 ,  F01N3/2878

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：US20170298797A1

公开(公告)日：2017-10-19

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: F01N3/28 ,  F01N3/035 ,  B01D53/94 ,  B01J35/04 ,  B01J23/46

CPC classification number: F01N3/28 ,  B01D53/94 ,  B01D2255/9155 ,  B01D2255/9202 ,  B01J23/42 ,  B01J23/464 ,  B01J35/04 ,  B01J35/10 ,  F01N3/0222 ,  F01N3/035 ,  F01N3/2828 ,  F01N2370/02 ,  F01N2510/0682

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：US20170122176A1

公开(公告)日：2017-05-04

申请号：US15333769

申请日：2016-10-25

Applicant: CATALER CORPORATION

Inventor： Yasutaka NOMURA ,  Shingo SAKAGAMI ,  Ryota ONOE ,  Yuta MORISHITA ,  Junji KURIYAMA ,  Hiroshi SEKINE

IPC: F01N3/28 ,  B01D46/24 ,  B01J35/04 ,  B01J23/10 ,  B01J35/00 ,  B01D53/94 ,  B01J23/46

CPC classification number: F01N3/2842 ,  B01D46/2474 ,  B01D53/94 ,  B01D53/944 ,  B01D2255/1025 ,  B01D2255/2065 ,  B01D2255/407 ,  B01D2255/908 ,  B01D2255/9155 ,  B01D2258/014 ,  B01J23/10 ,  B01J23/462 ,  B01J23/464 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/002 ,  B01J35/04 ,  F01N3/035 ,  F01N3/101 ,  F01N3/2828 ,  F01N2250/02 ,  F01N2330/06 ,  Y02T10/22

Abstract: The exhaust gas purification device according to the present invention includes a substrate of wall flow structure having a porous partition wall 16, and a catalyst layer held in internal pores of the partition wall 16. The catalyst layer contains, as a carrier, an OSC material having oxygen storage capacity. In the thickness direction of the partition wall 16, the porosity of the internal pores in inlet regions 16a is 25% or higher, and an average occupation ratio of the catalyst layer held in the internal pores is 75% or lower.

公开(公告)号：US20220184591A1

公开(公告)日：2022-06-16

申请号：US17440817

申请日：2020-06-01

Applicant: CATALER CORPORATION

Inventor： Ryota ONOE ,  Ryo TASAKI ,  Momoko IWAI ,  Yamato MATSUSHITA

IPC: B01J35/04 ,  B01J23/58 ,  B01D46/24 ,  B01D46/82 ,  F01N3/035 ,  F01N3/022

Abstract: A particulate filter includes a base material having a wall-flow structure including porous partition walls partitioning inlet and outlet cells, and wash-coating layers held inside partition walls. The wash-coating layers include inlet layers each formed from vicinity of an end portion at exhaust gas inflow side to have predetermined length and thickness and outlet layers each formed from vicinity of end portion at exhaust gas outflow side to have a predetermined length and thickness. The inlet and the outlet layers partially overlap with each other. Inlet layers of particulate filter contain substantially no noble metal catalyst, and outlet layers contain noble metal catalyst. Accordingly, PM collection performance can be easily enhanced in inlet region, and high gas distributability (pressure loss suppression performance) can be maintained in outlet region. Accordingly, it is possible to provide particulate filter capable of achieving high levels of PM collection performance and pressure loss suppression performance.

公开(公告)号：US20210060487A1

公开(公告)日：2021-03-04

申请号：US16644455

申请日：2018-09-03

Applicant: CATALER CORPORATION

Inventor： Ryota ONOE ,  Yosuke TODA ,  Taku MIURA

IPC: B01D53/94 ,  B01J35/04 ,  B01J35/10 ,  B01D46/00 ,  F01N3/022 ,  F01N3/035 ,  B01D46/24 ,  F01N3/10 ,  F01N3/28

Abstract: Provided is an exhaust gas purification catalyst body that can improve exhaust gas purification performance while maintaining favorable PM collection performance. The exhaust gas purification catalyst body includes a base of a wall flow structure having an inlet side cell, an outlet side cell, and porous partition wall, and a catalyst layer that is formed in the partition wall that is in contact with the inlet side cell or the outlet side cell. The catalyst layer is formed in a region of at least 50% of the thickness of the partition wall from a surface of the partition wall, and held on the surface of internal pores in the partition wall in the region.

公开(公告)号：US20200290019A1

公开(公告)日：2020-09-17

申请号：US16086083

申请日：2017-03-13

Applicant: CATALER CORPORATION

Inventor： Ryota ONOE ,  Kazuhiko ITO ,  Takahiro HARADA ,  Chihiro KASUYA

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

Abstract: Provided is an exhaust gas purification catalyst of OSC material-containing type that allows a favorable HC purification (oxidation) treatment to be performed even in a case where HC emissions are comparatively large, such as during engine startup. The exhaust gas purification catalyst of the present invention includes, as a catalyst layer (20), a front section (24) positioned upstream in an exhaust gas flow direction, and a rear section (26) positioned downstream of the front section in the exhaust gas flow direction. The front section contains Pd as a catalyst metal but does not contain an OSC material. The proportion, at which the front section is formed from the upstream leading end in the exhaust gas flow direction, is 10% to 40% with respect to 100% of a total length of the substrate (1) in the exhaust gas flow direction.

公开(公告)号：US20200276567A1

公开(公告)日：2020-09-03

申请号：US16479853

申请日：2018-02-15

Applicant: CATALER CORPORATION

Inventor： Ryota ONOE ,  Yasutaka NOMURA ,  Satoru INODA

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

Abstract: Provided is an exhaust gas purification catalyst that allows enhancing purification performance on exhaust gas. The exhaust gas purification catalyst according to the present invention has a substrate 10 of wall flow structure having a porous partition wall 16 which partitions inlet cells 12 and outlet cells 14, a first catalyst layer 20 formed on the surface of the partition wall 16, on the side facing the inlet cells 12, and a second catalyst layer 30 formed in the interior of the partition wall 16, at least in a region facing the outlet cells 14.

公开(公告)号：US20190193057A1

公开(公告)日：2019-06-27

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: B01J23/63 ,  F01N3/28 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01D53/94

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：US20170306823A1

公开(公告)日：2017-10-26

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 ,  B01J37/02 ,  B01J35/04 ,  B01J23/46 ,  B01J23/44 ,  B01J23/42 ,  B01J23/10 ,  B01J21/04 ,  B01J37/08 ,  B01J35/00

CPC classification number: F01N3/28 ,  B01D53/94 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/9155 ,  B01J21/04 ,  B01J23/10 ,  B01J23/42 ,  B01J23/44 ,  B01J23/464 ,  B01J35/0006 ,  B01J35/04 ,  B01J37/0236 ,  B01J37/0244 ,  B01J37/088 ,  F01N3/022 ,  F01N3/0222 ,  F01N3/035 ,  F01N2510/0682 ,  Y02T10/20

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.