公开(公告)号：US20210324777A1

公开(公告)日：2021-10-21

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: F01N3/28 ,  B01D53/94 ,  B01J35/04 ,  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：US20190099715A1

公开(公告)日：2019-04-04

申请号：US16086869

申请日：2017-03-09

Applicant: CATALER CORPORATION

Inventor： Yu SAKURADA ,  Takahiro HARADA ,  Ryota NAKASHIMA

IPC: B01D53/94 ,  B01J23/63 ,  B01J37/04 ,  B01J37/08

Abstract: An exhaust gas purifying catalyst having first carrier particles, second carrier particles, and precious metal catalyst particles supported on the first and second carrier particles, wherein: the first carrier particles contain ceria, zirconia, and a rare-earth oxide other than ceria; the second carrier particles contain a rare-earth oxide other than ceria, and may contain ceria and zirconia; the contained proportion of ceria and zirconia in the first carrier particles is higher than the contained proportion of ceria and zirconia in the second carrier particles; the contained proportion of the rare-earth oxide in the second carrier particles is higher than the contained proportion of the rare-earth oxide in the first carrier particles; and the contained proportion of ceria in the first carrier particles is 45 wt % or less, while the precious metal catalyst particles include rhodium particles.

公开(公告)号：US20180311616A1

公开(公告)日：2018-11-01

申请号：US15771902

申请日：2016-10-24

Applicant: CATALER CORPORATION

Inventor： Yu SAKURADA ,  Satoshi MATSUEDA ,  Sho HOSHINO ,  Ryota NAKASHIMA

IPC: B01D53/94 ,  B01J23/63 ,  B01J37/04 ,  B01J23/10

CPC classification number: B01D53/94 ,  B01D2255/206 ,  B01D2255/20715 ,  B01J21/04 ,  B01J21/063 ,  B01J21/066 ,  B01J21/08 ,  B01J23/10 ,  B01J23/42 ,  B01J23/44 ,  B01J23/464 ,  B01J23/63 ,  B01J35/0006 ,  B01J37/04

Abstract: A novel exhaust gas purifying catalyst, method for producing same, and an exhaust gas purification device using same, which are capable of maintaining catalytic activity of a precious metal at a higher level than compared with conventional exhaust gas purifying catalysts. An exhaust gas purifying catalyst having a first carrier particle, a second carrier particle, and a precious metal catalyst particle carried on the first and second carrier particles, wherein: the first carrier particle contains a rare-earth oxide other than ceria and at least one metal oxide selected from the group consisting of silica, alumina, ceria, zirconia, and titania; the second carrier particle contains a rare-earth oxide other than ceria; and the contained amount of the rare-earth oxide in the second carrier particle is higher than the contained amount of the rare-earth oxide in the first carrier particle.

公开(公告)号：US20210033009A1

公开(公告)日：2021-02-04

申请号：US16903473

申请日：2020-06-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

Inventor： Koji SUGIURA ,  Hiromasa NISHIOKA ,  Naoto MIYOSHI ,  Akemi SATO ,  Masatoshi IKEBE ,  Ryota NAKASHIMA ,  Yasutaka NOMURA ,  Hirotaka ORI

IPC: F01N3/022 ,  F01N3/10 ,  F01N13/18 ,  F01N3/28

Abstract: An exhaust gas control apparatus includes: a honeycomb substrate including an inflow cell and an outflow cell adjacent to each other with a partition wall sandwiched between the inflow cell and the outflow cell; a first sealing part provided at an outflow side end of the inflow cell, and a second sealing part provided at an inflow side end of the outflow cell; and a catalyst layer provided on the partition wall, and at least one of the first sealing part and the second sealing part is an OSC material-containing sealing part containing an OSC material and a sealant, and a concentration of the OSC material in the OSC material-containing sealing part is uniform in an extending direction.

公开(公告)号：US20170014806A1

公开(公告)日：2017-01-19

申请号：US15102653

申请日：2014-12-09

Applicant: CATALER CORPORATION

Inventor： Takahiro HARADA ,  Keiichi NARITA ,  Michio TANAKA ,  Hironobu KUNIOKU ,  Ryota NAKASHIMA

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

CPC classification number: B01J23/63 ,  B01D53/945 ,  B01D2255/10 ,  B01D2255/9022 ,  B01D2255/9025 ,  B01D2255/9032 ,  B01D2255/908 ,  B01D2255/9202 ,  B01D2255/9207 ,  B01J21/04 ,  B01J21/066 ,  B01J35/04 ,  B01J35/1014 ,  B01J35/1019 ,  B01J37/0244 ,  F01N3/101 ,  F01N3/2803 ,  F01N2510/0682 ,  F01N2510/0684 ,  Y02T10/22

Abstract: Provided is an exhaust gas purification catalyst with excellent durability against exhaust gas including a poisoning substance. The exhaust gas purification catalyst includes a porous substrate, a catalyst coating layer formed on the porous substrate, and a dummy coating layer formed on the outermost surface of the catalyst coating layer. The catalyst coating layer has a carrier and a noble metal catalyst supported on the carrier. The dummy coating layer includes a carrier having at least alumina and does not include a noble metal catalyst. The dummy coating layer is formed to have a length which, from the end on the exhaust gas inlet side, is 10% to 70% of the entire length of the catalyst coating layer along the exhaust gas flow direction.

Abstract translation: 本发明提供一种对包含中毒物质的废气的耐久性优异的排气净化催化剂。 废气净化催化剂包括多孔基材，形成在多孔基材上的催化剂涂层和形成在催化剂涂层的最外表面上的虚拟涂层。 催化剂涂层具有负载在载体上的载体和贵金属催化剂。 虚拟涂层包括至少具有氧化铝并且不包括贵金属催化剂的载体。 虚拟涂层形成为具有从排气入口侧的端部沿着废气流动方向为催化剂涂层的整个长度的10％至70％的长度。