公开(公告)号：US10960389B2

公开(公告)日：2021-03-30

申请号：US16303338

申请日：2017-05-12

Applicant: CATALER CORPORATION

Inventor： Yuki Takesue ,  Kyosuke Murakami ,  Ryota Onoe

IPC: B01J23/10 ,  B01J23/44 ,  B01J23/63 ,  B01J35/00 ,  B01J35/04 ,  F01N3/10 ,  B01J37/02

Abstract: An exhaust gas purification catalyst of the present invention is provided with a base 10 and a catalyst coat layer 30. The catalyst coat layer is provided with Rh and Pd as noble metal catalysts. Herein Rh is disposed in a first-stage upper layer A and a second-stage upper layer C, and Pd is disposed in the first-stage upper layer A and a first-stage lower layer B, and in a second-stage lower layer D. A mass ratio (APd/ARh) of Pd to Rh, disposed in first-stage upper layer A is 0.5≤(APd/ARh)≤3.

公开(公告)号：US10814311B2

公开(公告)日：2020-10-27

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: B01J23/10 ,  B01J23/44 ,  B01J23/63 ,  B01J35/00 ,  B01J35/04 ,  F01N3/022 ,  F01N3/035 ,  F01N3/10 ,  F01N3/24 ,  F01N3/28 ,  B01D53/94 ,  B01J23/46 ,  B01J37/02 ,  F01N3/021

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：US10369520B2

公开(公告)日：2019-08-06

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: F01N3/10 ,  F01N3/28 ,  B01D53/94 ,  B01J23/63 ,  B01J35/00 ,  B01J35/04

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