公开(公告)号：US20240342655A1

公开(公告)日：2024-10-17

申请号：US18691962

申请日：2022-09-08

申请人： Umicore AG & Co. KG

发明人： Arkady Kustov ,  Preben Nissen

IPC分类号： B01D53/94 ,  B01J21/06 ,  B01J23/42 ,  B01J29/072 ,  B01J29/76 ,  B01J35/00 ,  B01J35/58 ,  B01J37/00 ,  F01N3/20 ,  F01N3/28

CPC分类号： B01D53/9436 ,  B01D53/9418 ,  B01J21/063 ,  B01J23/42 ,  B01J29/072 ,  B01J29/763 ,  B01J35/19 ,  B01J35/58 ,  B01J37/0018 ,  F01N3/2066 ,  F01N3/2828 ,  B01D2251/2062 ,  B01D2255/1021 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/9022 ,  B01D2257/404 ,  B01D2257/406 ,  B01D2258/012 ,  F01N2510/063 ,  F01N2510/0684 ,  F01N2610/02

摘要： The present invention provides a catalytic article for the removal of nitrogen oxides and ammonia from exhaust gas of lean combustion engines which heats up quickly to its operation temperature and shows a better performance. Another aim of the present invention is to provide a system for the purification of exhaust gases emitted from lean combustion engines comprising said catalytic article. The catalytic article comprises a corrugated glass fiber substrate, a first washcoat, comprising at least one platinum group metal and/or at least one platinum group metal oxide, supported on a refractory metal oxide support, and optionally at least one binder, wherein said first washcoat is affixed to the glass fibers of the nonwoven corrugated glass fiber substrate, such that areas consisting of particles of the first washcoat alternate with void spaces, and a second washcoat, comprising an SCR catalytically active composition and optionally at least one binder, wherein said second washcoat is affixed to the glass fibers of the nonwoven corrugated glass fiber substrate, and wherein said second washcoat covers the areas consisting of particles of the first washcoat and the void spaces. The SCR catalytically active composition preferably comprises molecular sieves.