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公开(公告)号：US20210060487A1
公开(公告)日：2021-03-04
申请号：US16644455
申请日：2018-09-03
Applicant: CATALER CORPORATION
Inventor： Ryota ONOE , Yosuke TODA , Taku MIURA
IPC: B01D53/94 , B01J35/04 , B01J35/10 , B01D46/00 , F01N3/022 , F01N3/035 , B01D46/24 , F01N3/10 , F01N3/28
Abstract: Provided is an exhaust gas purification catalyst body that can improve exhaust gas purification performance while maintaining favorable PM collection performance. The exhaust gas purification catalyst body includes a base of a wall flow structure having an inlet side cell, an outlet side cell, and porous partition wall, and a catalyst layer that is formed in the partition wall that is in contact with the inlet side cell or the outlet side cell. The catalyst layer is formed in a region of at least 50% of the thickness of the partition wall from a surface of the partition wall, and held on the surface of internal pores in the partition wall in the region.
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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
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.
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