公开(公告)号：US20190201875A1

公开(公告)日：2019-07-04

申请号：US16332115

申请日：2017-09-11

Applicant: CATALER CORPORATION

Inventor： Keigo Hori ,  Norihiko AONO ,  Daisuke OKI ,  Yuya KAWANO

IPC: B01J23/66 ,  B01D53/94 ,  B01J23/50 ,  B01J37/04 ,  B01J37/08 ,  B01J37/02 ,  B01J21/04 ,  B01J35/04 ,  F01N3/20 ,  F01N3/28

CPC classification number: B01J23/66 ,  B01D53/94 ,  B01D53/9418 ,  B01D2255/104 ,  B01D2255/20792 ,  B01D2255/2092 ,  B01J21/04 ,  B01J23/50 ,  B01J32/00 ,  B01J35/04 ,  B01J37/02 ,  B01J37/0215 ,  B01J37/04 ,  B01J37/08 ,  F01N3/10 ,  F01N3/20 ,  F01N3/2803 ,  Y02A50/2325 ,  Y02T10/24

Abstract: The exhaust gas purification catalyst disclosed here is an exhaust gas purification catalyst disposed in the exhaust pipe of an internal combustion engine to purify nitrogen oxides contained in exhaust gas discharged from the internal combustion engine, provided with a silver alumina catalyst comprising at least alumina as a catalyst and silver supported on this alumina, wherein, in the silver alumina catalyst, the ratio of the peak intensity at a wave number of 1595 cm−1 to the peak intensity at a wave number of 1613 cm−1 by the pyridine IR method is at least 0.3, and the carried amount of the silver is 1.0 wt % to 6.0 wt % given 100 wt % as the total amount of the silver alumina catalyst.