公开(公告)号：US20220152595A1

公开(公告)日：2022-05-19

申请号：US17593379

申请日：2020-03-19

Applicant: BASF Corporation

Inventor： Shiang SUNG ,  Markus KOEGEL ,  Gerd GRUBERT ,  Sven Jare LOHMEIER ,  Alfred PUNKE

IPC: B01J23/656 ,  B01J23/63 ,  B01J37/03 ,  B01J37/02 ,  B01J35/04 ,  B01D53/94 ,  F01N3/20 ,  F01N3/28

Abstract: The present disclosure is directed to a method for treating a gaseous exhaust stream containing nitrogen oxides (NOx) from a diesel or lean-burn gasoline engine following a cold-start of the engine The method involves contact of the gaseous exhaust stream with at least a low temperature NOx adsorber (LT-NA) component. The LT-NA component includes a rare earth metal component, a platinum group metal (PGM) component, and a dopant. The present disclosure is also directed to a method of modulating a NOx adsorption/desorption profile of an LT-NA composition, a NOx desorption temperature range of an LT-NA composition, or both.

公开(公告)号：US20230330634A1

公开(公告)日：2023-10-19

申请号：US17758718

申请日：2021-01-26

Applicant: BASF Corporation

Inventor： Shiang SUNG ,  Markus KOEGEL ,  Sven Jare LOHMEIER

IPC: B01J23/10 ,  B01D53/94 ,  B01J21/04 ,  B01J23/42 ,  B01J23/34 ,  B01J23/44 ,  B01J37/03 ,  B01J29/70 ,  B01J35/00

CPC classification number: B01J23/10 ,  B01D53/944 ,  B01J21/04 ,  B01J23/42 ,  B01J23/34 ,  B01J23/44 ,  B01J37/038 ,  B01J29/7007 ,  B01D53/9486 ,  B01J35/0006 ,  B01D2258/01 ,  B01D2257/502 ,  B01D2257/40 ,  B01D2257/702

Abstract: Disclosed herein are oxidation catalyst compositions comprising a first platinum group metal (PGM) component, a manganese (Mn) component, a first refractory metal oxide support material, and a metal component comprising yttrium, lanthanum, tin, magnesium, cerium, titanium, or a combination of any of the foregoing, wherein each of the first PGM component, the Mn component, and the metal component are supported on the first refractory metal oxide support material; catalyst articles coated with at least one such catalyst composition; and emission treatment systems including at least one such catalyst article.

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.