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：US20190336945A1

公开(公告)日：2019-11-07

申请号：US16061493

申请日：2016-12-26

Applicant: CATALER CORPORATION ,  SANTOKU CORPORATION

Inventor： Kyosuke MURAKAMI ,  Keiichi NARITA ,  Satoshi MATSUEDA ,  Michio TANAKA ,  Tadatoshi MUROTA ,  Shigeru ONO ,  Tomonori TAHARA

IPC: B01J23/44 ,  B01J23/10 ,  B01J37/04 ,  B01J37/03 ,  B01J37/08 ,  B01J37/00 ,  B01D53/94 ,  F01N3/28 ,  F01N3/10

Abstract: A Pd-supporting Zr-based composite oxide wherein by having a Zr-containing composite oxide support and Pd supported thereon and by showing, upon XAFS (X-ray absorption fine structure) analysis, a maximum peak in a Pd bond distance range of 2.500-3.500 Å, the maximum peak being located in a position of 3.050-3.110 Å.

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。

公开(公告)号：US20180243728A1

公开(公告)日：2018-08-30

申请号：US15553020

申请日：2016-02-17

Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

Inventor： Satoru KATOH ,  Toshitaka TANABE ,  Masahide MIURA ,  Hiromasa SUZUKI ,  Hiroaki NAITO ,  Hirotaka ORI ,  Keiichi NARITA ,  Michihiko TAKEUCHI ,  Tatsuya OHASHI

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

CPC classification number: B01J23/63 ,  B01D53/94 ,  B01D2255/1021 ,  B01D2255/407 ,  B01D2255/9202 ,  B01J35/023 ,  B01J35/026 ,  B01J35/04 ,  B01J35/10 ,  B01J35/1076 ,  B01J35/108 ,  B01J37/0018 ,  B01J37/0036 ,  B01J37/0219 ,  B01J37/0234 ,  B01J37/08 ,  F01N3/28 ,  F01N2330/02 ,  F01N2330/06 ,  F01N2510/068

Abstract: A catalyst for purification of exhaust gas, wherein a substrate and a catalyst coat layer which is formed on a surface of the substrate and which comprises catalyst particles, wherein the catalyst coat layer has an average thickness in a range of 25 to 160 μm, and a void fraction in a range of 50 to 80% by volume as measured by a weight-in-water method, 0.5 to 50% by volume of all voids in the catalyst coat layer consist of high-aspect ratio pores which have equivalent circle diameters in a range of 2 to 50 μm in a cross-sectional image of a cross-section of the catalyst coat layer which the cross-section is perpendicular to a flow direction of exhaust gas in the substrate, and which have aspect ratios of 5 or higher, and the high-aspect ratio pores have an average aspect ratio in a range of 10 to 50.