公开(公告)号：US20240157348A1

公开(公告)日：2024-05-16

申请号：US18549939

申请日：2022-03-18

Applicant: BASF Corporation

Inventor： Alfred Punke ,  Gerd Grubert ,  Jeffrey B Hoke ,  Shiang Sung

IPC: B01J29/67 ,  B01D53/94 ,  B01J21/04 ,  B01J21/12 ,  B01J23/42 ,  B01J23/44 ,  B01J23/656 ,  B01J29/70 ,  F01N3/28

CPC classification number: B01J29/67 ,  B01D53/9422 ,  B01D53/9472 ,  B01D53/9477 ,  B01J21/04 ,  B01J21/12 ,  B01J23/42 ,  B01J23/44 ,  B01J23/6562 ,  B01J29/7007 ,  F01N3/2803 ,  B01D2251/208 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/91 ,  B01D2257/404 ,  B01D2258/012 ,  F01N2370/04 ,  F01N2510/063 ,  F01N2510/068

Abstract: The present invention relates to a system for the treatment of an exhaust gas of a diesel combustion engine, a process for preparation of such a system, and a use thereof. In particular, said system comprises a NOx adsorber component and a lean NOx trap component, wherein the NOx adsorber component is comprised in a first catalyst comprising a first substrate and a first coating comprising a platinum group metal supported on a zeolitic material; and wherein the lean NOx trap component is comprised in a second catalyst comprising a second substrate and a second coating comprising Pt and Pd both supported on a specific first non-zeolitic oxidic support material, wherein in said system the NOx adsorber component is arranged upstream of the lean NOx trap component.