公开(公告)号：US20190083931A1

公开(公告)日：2019-03-21

申请号：US16078082

申请日：2017-02-23

Applicant: CATALER CORPORATION

Inventor： Koki YANAGAWA ,  Satoshi MATSUEDA ,  Yu SAKURADA ,  Chihiro KASUYA

IPC: B01D53/94 ,  B01J27/053 ,  F01N3/20

Abstract: An exhaust gas purification catalyst, characterized by having a catalyst layer containing palladium, rhodium, and alumina, which supports a sulfate of an alkaline-earth metal selected from barium sulfate and strontium sulfate, and the correlation coefficients ρPd,AE and ρRh,AE calculated from the characteristic X-ray intensity measured using an electron beam micro-analyzer for the palladium, rhodium, and alkaline-earth metal being +0.75 to +1.00 and 0.00 to +0.25, respectively, using 350 points as measurement points obtained by equally dividing the catalyst layer into 351 parts in the thickness direction on a virtual straight line that runs through the catalyst layer in the thickness direction.

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：US20230294044A1

公开(公告)日：2023-09-21

申请号：US18014273

申请日：2021-07-06

Applicant: CATALER CORPORATION

Inventor： Kohei TAKASAKI ,  Tatsuya OHASHI ,  Shunsuke OISHI ,  Ryota ONOE ,  Junichi HORI ,  Ryosuke TAKASU ,  Chihiro KASUYA

IPC: B01J37/02 ,  B01J35/04 ,  B01J20/16 ,  B01J23/46

CPC classification number: B01J37/0244 ,  B01J20/165 ,  B01J23/464 ,  B01J35/04 ,  B01J37/0225 ,  B01J37/0228 ,  B01J37/0246

Abstract: Provided is an exhaust gas purification catalyst system comprising, in the following order, from the upstream side of an exhaust gas flow: a first exhaust gas purification catalyst apparatus 100 including a metal honeycomb substrate 110 and a first catalyst coat layer 120 on the metal honeycomb substrate 110; a heater 300; and a second exhaust purification catalyst apparatus 200 including a cordierite honeycomb substrate 210 and a second catalyst coat layer 220 on the cordierite honeycomb substrate 210, wherein the first catalyst coat layer 120 contains an adsorbent 130 that can adsorb one or two or more among NOx, HC and CO, and the second catalyst coat layer 220 contains inorganic oxide particles 230 and catalyst precious metal particles 240 supported on the inorganic oxide particles 230.

公开(公告)号：US20180015411A1

公开(公告)日：2018-01-18

申请号：US15545418

申请日：2016-01-08

Applicant: Cataler Corporation

Inventor： Ryota ONOE ,  Tsuyoshi ITO ,  Yuki TAKESUE ,  Masatoshi IKEBE ,  Chihiro KASUYA ,  Yuta MORISHITA

IPC: B01D53/94 ,  B01J23/63 ,  B01J35/04 ,  F01N3/28

CPC classification number: B01D53/94 ,  B01D53/9454 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/407 ,  B01D2255/9032 ,  B01D2255/905 ,  B01D2255/908 ,  B01D2255/9202 ,  B01D2258/01 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/0026 ,  B01J35/04 ,  B01J2523/00 ,  F01N3/101 ,  F01N3/28 ,  F01N2330/60 ,  Y02T10/22 ,  B01J2523/31 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/822 ,  B01J2523/824

Abstract: The exhaust gas cleaning catalyst according to the present invention is provided with a cylindrical substrate 10 and a catalyst coat layer 20 formed on the surface of the substrate 10. A ratio of the length L in the cylindrical axis direction of the substrate 10 and the diameter D of a cross section orthogonal to the cylindrical axis direction is denoted by (L/D)≦0.8. The coat density of the catalyst coat layer 20 differs between an upstream side portion 10a that includes the exhaust gas inlet-side end 16 of the substrate 10 and a downstream side portion 10b that includes the exhaust gas outlet-side end 18 of the substrate 10. The coat density A in the upstream side portion 10a is lower than the coat density B in the downstream side portion 10b (A

公开(公告)号：US20220080354A1

公开(公告)日：2022-03-17

申请号：US17419583

申请日：2020-02-05

Applicant: CATALER CORPORATION

Inventor： Naoki YOKOYAMA ,  Akio KUBOTA ,  Nobuaki BANDO ,  Chihiro KASUYA

IPC: B01D53/94 ,  F01N3/28

Abstract: A perforated metallic base material for purging exhaust is obtained by laminating a wavy foil having pores and a flat foil having pores and forming the same into a cylindrical shape, wherein the wavy foil and/or the flat foil has axially perforated portions having pores throughout the axial direction of the cylindrical shape and axially non-perforated portions not having pores overall in the axial direction of the cylindrical form.

公开(公告)号：US20210310391A1

公开(公告)日：2021-10-07

申请号：US17251942

申请日：2019-06-26

Applicant: CATALER CORPORATION

Inventor： Chihiro KASUYA ,  Yuji YABUZAKI ,  Masaaki KAWAI ,  Mitsuyoshi OKADA

IPC: F01N3/10 ,  B01J23/46 ,  F01N3/28 ,  B01J23/42 ,  B01J23/44

Abstract: An exhaust gas purification catalyst device has catalyst coating layers, which extend from the upstream side to the downstream side of the exhaust gas flow. The catalyst coating layers each have at least three zones present in order from the upstream side to the downstream side of the exhaust gas flow, and each of these at least three zones is an oxidation catalyst zone or a reduction catalyst zone. In the uppermost layer of an oxidation catalyst zone, the total number of atoms of platinum and palladium is greater than the number of atoms of rhodium; in the upper most layer of a reduction catalyst zone, the number of atoms of rhodium is greater than the total number of atoms of platinum and palladium. The oxidation catalyst zones and the reduction catalyst zones alternate at least twice in the exhaust gas flow direction.

公开(公告)号：US20190015820A1

公开(公告)日：2019-01-17

申请号：US16071444

申请日：2017-01-19

Applicant: CATALER CORPORATION

Inventor： Chihiro KASUYA ,  Kenichi TAKI ,  Satoshi MATSUEDA ,  Sho HOSHINO

IPC: B01J23/63 ,  B01D53/94 ,  B01J27/053 ,  B01J37/08 ,  B01J35/00 ,  F01N3/10 ,  F01N3/28

Abstract: An exhaust gas purification device which has improved exhaust gas purification performance. An exhaust gas purification device which includes a first catalyst layer that contains: a Pd-supporting catalyst which is obtained by having alumina carrier particles support Pd; a first Rh-supporting catalyst which is obtained by having first ceria-zirconia carrier particles support Rh; and second ceria-zirconia carrier particles. This exhaust gas purification device is configured such that: the ceria concentration in the first ceria-zirconia carrier particles is 30 wt % or less; and the amount of ceria in the second ceria-zirconia carrier particles is larger than the amount of ceria in the first ceria-zirconia carrier particles.