公开(公告)号：US12208361B2

公开(公告)日：2025-01-28

申请号：US18028800

申请日：2021-09-29

Applicant: BASF MOBILE EMISSIONS CATALYSTS LLC

Inventor： Gerd Grubert ,  Alfred Punke ,  Arne Tobias Niggebaum ,  Sven Jare Lohmeier ,  Emre Emmez ,  Torsten Neubauer ,  Jeffrey B. Hoke ,  Shiang Sung

IPC: B01D53/94 ,  B01J23/34 ,  B01J27/185 ,  B01J29/67 ,  B01J29/74 ,  B01J35/00 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20 ,  F01N3/28 ,  F01N13/00

Abstract: The present invention relates a system for the treatment of an exhaust gas of a diesel combustion engine, said system comprising a specific NOx adsorber component, a diesel oxidation catalyst (DOC) component, a selective catalytic reduction (SCR) component, a gas heating component, and a reductant injector, wherein in said system, the specific NOx adsorber component is arranged upstream of the gas heating component, the reductant injector is arranged up-stream of the SCR component, the gas heating component is arranged upstream of the reductant injector, the DOC component is arranged upstream of the reductant injector, and the DOC component and the gas heating component are directly consecutive components. Further, the present invention relates a process for preparing such a system and use thereof.

公开(公告)号：US12138619B2

公开(公告)日：2024-11-12

申请号：US17593379

申请日：2020-03-19

Applicant: BASF MOBILE EMISSIONS CATALYSTS LLC

Inventor： Shiang Sung ,  Markus Koegel ,  Gerd Grubert ,  Sven Jare Lohmeier ,  Alfred Punke

IPC: B01J23/10 ,  B01D53/94 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/62 ,  B01J23/63 ,  B01J23/644 ,  B01J23/656 ,  B01J35/04 ,  B01J35/56 ,  B01J37/02 ,  B01J37/03 ,  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：US12285745B2

公开(公告)日：2025-04-29

申请号：US17611403

申请日：2020-05-20

Applicant: BASF MOBILE EMISSIONS CATALYSTS LLC

Inventor： Jeffrey B. Hoke ,  Gerd Grubert ,  Alfred Punke

IPC: B01J29/67 ,  B01D53/94 ,  B01J21/04 ,  B01J23/34 ,  B01J23/44 ,  B01J29/76 ,  B01J35/56 ,  F01N3/10 ,  F01N3/20 ,  F01N3/28

Abstract: The present disclosure is directed to an emission treatment system for oxidation of hydrocarbons and carbon monoxide and for NOx abatement in an exhaust stream of a lean burn engine, the emission treatment system including a low-temperature NOx adsorber (LT-NA) that includes a molecular sieve impregnated with at least one PGM component positioned in fluid communication with the exhaust stream; and an oxidation catalyst that includes a refractory metal oxide support containing manganese impregnated with platinum positioned in fluid communication with the exhaust stream, each of the LT-NA and the oxidation catalyst being disposed on a substrate. The invention provides a catalyst article combining an oxidation catalyst with a LT-NA and a related method of treatment of an exhaust gas.