公开(公告)号：US20200346200A1

公开(公告)日：2020-11-05

申请号：US16758561

申请日：2018-09-14

Applicant: CATALER CORPORATION

Inventor： Kohei TAKASAKI ,  Yuji MATSUHISA ,  Nobuaki BANDO ,  Hiroshi ONO ,  Tomohito MIZUKAMI ,  Tsuyoshi ITO

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

Abstract: An exhaust gas purification device has a metal substrate and a catalyst layer on the metal substrate, wherein the metal substrate is a wound body of one or a plurality of metal foils, at least one of the one or a plurality of metal foils is a perforated metal foil having holes, the catalyst layer contains noble metal catalyst particles and a carrier for carrying the noble metal catalyst particles, and more noble metal catalyst particles are present in the catalyst layer on side surfaces of holes, which face an upstream side of an exhaust gas flow, than in the catalyst layer on side surfaces of holes, which face a downstream side of the exhaust gas flow.