公开(公告)号：US20240269611A1

公开(公告)日：2024-08-15

申请号：US18437280

申请日：2024-02-09

申请人： JOHNSON MATTHEY PUBLIC LIMITED COMPANY

发明人： Silvia ALCOVE CLAVE ,  Jillian COLLIER ,  Veselina Mihaylova GEORGIEVA ,  Alexander Nicholas Michael GREEN ,  Loredana MANTAROSIE ,  Maria Pia RUGGERI ,  Roberta VILLAMAINA

IPC分类号： B01D53/94 ,  B01J29/68 ,  B01J29/76 ,  B01J35/00 ,  B01J35/57 ,  B01J37/02 ,  B01J37/08 ,  F01N3/20 ,  F01N3/28

CPC分类号： B01D53/9418 ,  B01D53/9436 ,  B01D53/9472 ,  B01D53/9477 ,  B01J29/68 ,  B01J29/763 ,  B01J35/19 ,  B01J35/57 ,  B01J37/0201 ,  B01J37/0236 ,  B01J37/08 ,  F01N3/2066 ,  F01N3/2803 ,  B01D2251/2062 ,  B01D2251/2067 ,  B01D2255/20723 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/9032 ,  B01D2255/9155 ,  B01D2257/402 ,  B01D2257/404 ,  B01D2257/406 ,  B01D2258/012 ,  B01D2258/016 ,  F01N2370/04 ,  F01N2610/02

摘要： Provided is an SCR catalyst article comprising a substrate having thereon a second catalyst composition downstream of a first catalyst composition, wherein the first and second catalyst compositions are different and wherein the first catalyst composition is an SCR catalyst composition and the second catalyst composition comprises an Fe-loaded small- or medium-pore molecular sieve, the small- or medium-pore molecular sieve having a silica-to-alumina ratio (SAR) of from 6 to 19.