公开(公告)号：EP3081298A4

公开(公告)日：2016-12-21

申请号：EP14870103

申请日：2014-12-09

Applicant: CATALER CORP

Inventor： HARADA TAKAHIRO ,  NARITA KEIICHI ,  TANAKA MICHIO ,  KUNIOKU HIRONOBU ,  NAKASHIMA RYOTA

IPC: B01J23/63 ,  B01D53/94 ,  B01J37/02 ,  F01N3/10 ,  F01N3/28

CPC classification number: B01J23/63 ,  B01D53/945 ,  B01D2255/10 ,  B01D2255/9022 ,  B01D2255/9025 ,  B01D2255/9032 ,  B01D2255/908 ,  B01D2255/9202 ,  B01D2255/9207 ,  B01J21/04 ,  B01J21/066 ,  B01J35/04 ,  B01J35/1014 ,  B01J35/1019 ,  B01J37/0244 ,  F01N3/101 ,  F01N3/2803 ,  F01N2510/0682 ,  F01N2510/0684 ,  Y02T10/22

Abstract: Provided is an exhaust gas purification catalyst with excellent durability against exhaust gas including a poisoning substance. The exhaust gas purification catalyst 7 includes a porous substrate 10, a catalyst coating layer 30 formed on the porous substrate, and a dummy coating layer 50 formed on the outermost surface of the catalyst coating layer. The catalyst coating layer 30 has a carrier and a noble metal catalyst supported on the carrier. The dummy coating layer 50 includes a carrier having at least alumina and does not include a noble metal catalyst. The dummy coating layer 50 is formed to have a length which, from the end on the exhaust gas inlet side, is 10% to 70% of the entire length of the catalyst coating layer 30 along the exhaust gas flow direction.

Abstract translation: 提供了对包含中毒物质的排气具有优异耐久性的废气净化催化剂。 废气净化催化剂7包括多孔基材10，形成在多孔基材上的催化剂涂层30和形成在催化剂涂层的最外表面上的虚拟涂层50。 催化剂涂层30具有负载在载体上的载体和贵金属催化剂。 虚拟涂层50包括至少具有氧化铝并且不包括贵金属催化剂的载体。 假涂层50形成为从排气入口侧的端部沿着排气流动方向为催化剂涂层30的全长的10％〜70％的长度。