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：US20220161248A1

公开(公告)日：2022-05-26

申请号：US17593378

申请日：2020-03-19

Applicant: BASF Corporation

Inventor： Shiang SUNG ,  Markus KOEGEL

IPC: B01J35/04 ,  B01J23/62 ,  B01J23/10 ,  B01J35/00 ,  B01J37/03 ,  B01J29/70 ,  B01J29/46 ,  B01J29/80 ,  B01J23/656 ,  B01D53/94 ,  F01N3/022 ,  F01N3/28 ,  F01N3/10 ,  F01N3/20

Abstract: The present disclosure is directed to a low temperature carbon monoxide (LT-CO) oxidation catalyst composition for abatement of exhaust gas emissions from a lean burn engine. The LT-CO oxidation catalyst composition includes an oxygen storage component (OSC), a first platinum group metal (PGM) component, and a promoter metal, wherein the OSC is impregnated with the first PGM component and the promoter metal and the LT-CO oxidation catalyst composition is effective for oxidizing carbon monoxide (CO) and hydrocarbons (HC) under cold start conditions. Further provided are catalytic articles including the LT-CO oxidation catalyst composition, which may optionally further include a diesel oxidation catalyst (DOC) composition (giving an LT-CO/DOC article). Further provided is an exhaust gas treatment system including such catalytic articles, and methods for reducing a HC or CO level in an exhaust gas stream using such catalytic articles.

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.