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：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：US20200316579A1

公开(公告)日：2020-10-08

申请号：US16303338

申请日：2017-05-12

Applicant: CATALER CORPORATION

Inventor： Yuki TAKESUE ,  Kyosuke MURAKAMI ,  Ryota ONOE

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

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.