公开(公告)号：US20240316496A1

公开(公告)日：2024-09-26

申请号：US18573243

申请日：2022-06-29

Applicant: BASF CORPORATION

Inventor： Gerd GRUBERT ,  Arne Tobias NIGGEBAUM ,  Emre EMMEZ ,  Torsten NEUBAUER ,  Xinyi WEI ,  Jeffrey B HOKE

IPC: B01D53/94 ,  B01J23/42 ,  B01J29/74 ,  B01J35/00 ,  B01J35/56 ,  B01J37/02

CPC classification number: B01D53/945 ,  B01D53/9468 ,  B01J23/42 ,  B01J29/7484 ,  B01J35/19 ,  B01J35/56 ,  B01J37/0246 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/204 ,  B01D2255/2073 ,  B01D2255/50 ,  B01D2255/9022 ,  B01D2255/9155 ,  B01D2257/404 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2258/012

Abstract: The present invention relates to a NOx adsorber diesel oxidation catalyst (NA-DOC) for the treatment of an exhaust gas, the catalyst comprising: a substrate comprising an inlet end, an outlet end, a substrate axial length extending from the inlet end to the outlet end and a plurality of passages defined by internal walls of the substrate extending therethrough; a NOx adsorber (NA) coating disposed on the surface of the internal walls of the substrate, said coating comprising a platinum group metal, a zeolitic material and one or more of an alkaline earth metal and manganese; and a diesel oxidation catalyst (DOC) coating, said coating comprising a platinum group metal supported on a non-zeolitic oxidic material.

公开(公告)号：US20240375049A1

公开(公告)日：2024-11-14

申请号：US18690430

申请日：2022-09-13

Applicant: BASF CORPORATION

Inventor： Arne Tobias NIGGEBAUM ,  Gerd GRUBERT ,  Sven Jare LOHMEIER ,  Emre EMMEZ ,  Torsten NEUBAUER

IPC: B01D53/94 ,  B01J23/56 ,  B01J35/00

Abstract: A NOx adsorber diesel oxidation catalyst for the treatment of an exhaust gas, the catalyst comprising: a substrate comprising an inlet end, an outlet end, a substrate axial length extending from the inlet end to the outlet end and a plurality of passages defined by internal walls of the substrate extending therethrough; a first NOx adsorber (NA) coating, said coating comprising palladium supported on a first non-zeolitic oxidic material comprising ceria; a second NOx adsorber (NA) coating, said coating comprising one or more of an alkaline earth metal supported on a support material and a platinum group metal component supported on a second non-zeolitic oxidic material; and a diesel oxidation catalyst (DOC) coating, said coating comprising a platinum group metal component supported on a third non-zeolitic oxidic material.