公开(公告)号：US10919025B2

公开(公告)日：2021-02-16

申请号：US16751841

申请日：2020-01-24

Applicant: BASF CORPORATION

Inventor： Yuejin Li ,  Shiang Sung ,  Stanley D. Roth ,  Torsten Neubauer ,  Susanne Stiebels

IPC: B01J23/46 ,  B01J23/42 ,  B01J23/44 ,  B01J23/52 ,  B01J23/50 ,  B01J23/34 ,  B01J23/745 ,  B01J23/72 ,  B01J23/14 ,  B01J23/75 ,  B01J23/755 ,  B01J23/89 ,  B01J23/10 ,  B01J21/04 ,  B01J21/08 ,  B01J35/10 ,  B01D53/94

Abstract: A nitrous oxide (N2O) removal catalyst composition for treating an exhaust stream of an internal combustion engine is provided, containing a platinum group metal (PGM) component on a metal oxide-based support, wherein the N2O removal catalyst composition is in a substantially reduced form, such that it has an oxygen deficiency of about 0.05 mmol oxygen atoms/g or greater, and wherein the N2O removal catalyst composition provides effective removal of at least a portion of N2O from the exhaust stream under lean conditions at a temperature of about 350° C. or lower. N2O removal catalytic articles, systems, and methods are also provided for removing at least a portion of N2O from an exhaust stream under lean, low temperature conditions.

公开(公告)号：US20200263586A1

公开(公告)日：2020-08-20

申请号：US16869622

申请日：2020-05-08

Applicant: BASF Corporation

Inventor： Kevin Hallstrom ,  David Youngren ,  Yuejin Li

IPC: F01N3/28 ,  F01N3/20 ,  F01N3/035 ,  F01N3/08 ,  B01D53/94 ,  B01J35/04 ,  B01J23/89 ,  B01J29/76 ,  B01J37/02

Abstract: The present disclosure is directed to a system for treating an exhaust gas stream from an engine, which includes a diesel oxidation catalyst (DOC) located downstream of the engine and adapted for oxidation of hydrocarbons and carbon monoxide, an injector adapted for the addition of a reductant to the exhaust gas stream located downstream of the DOC, a catalyzed soot filter (CSF) located downstream of the injector, and a selective catalytic reduction component adapted for the oxidation of nitrogen oxides located downstream of the CSF. The CSF is adapted for oxidizing hydrocarbons and includes a selective oxidation catalyst composition on a filter with high selectivity ratio for hydrocarbon oxidation: ammonia oxidation (e.g., at least 0.6).

公开(公告)号：US20180353905A1

公开(公告)日：2018-12-13

申请号：US15562628

申请日：2016-03-30

Applicant: BASF Corporation

Inventor： Yuejin Li ,  Stanley A. Roth

IPC: B01D53/94 ,  B01D46/24 ,  B01J29/76 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01J23/44 ,  F01N3/035 ,  F01N13/00 ,  F01N3/20

Abstract: Provided are catalyst articles, methods of manufacturing catalyst articles, and methods for controlling emissions in diesel engine exhaust streams with catalyst articles, where the emission treatment system of various embodiments effectively treats diesel engine exhaust with a catalyst article. In one or more embodiments, the catalyst articles have a platinum group metal end coating covering an outlet end surface of the catalytic article. In one or more embodiments, a method is provided where an applicator transfers a platinum group metal coating to an outlet end face of a catalytic article.

公开(公告)号：US20180195425A1

公开(公告)日：2018-07-12

申请号：US15738879

申请日：2016-06-30

Applicant: BASF Corporation

Inventor： Yuejin Li ,  Xiaolai Zheng ,  Stanley A. Roth ,  Olga Gerlach ,  Andreas Sundermann

IPC: F01N3/20 ,  B01D53/94 ,  B01J35/00 ,  B01J37/00 ,  B01J37/02 ,  B01J37/08

CPC classification number: F01N3/208 ,  B01D53/9404 ,  B01D53/9418 ,  B01D53/9427 ,  B01D53/9445 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/1028 ,  B01D2255/104 ,  B01D2255/106 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/2068 ,  B01D2255/207 ,  B01D2255/20715 ,  B01D2255/9202 ,  B01D2255/9207 ,  B01D2257/402 ,  B01D2258/012 ,  B01J23/002 ,  B01J23/44 ,  B01J23/464 ,  B01J23/63 ,  B01J23/66 ,  B01J23/894 ,  B01J35/0006 ,  B01J35/002 ,  B01J35/0026 ,  B01J35/1014 ,  B01J35/1038 ,  B01J37/0018 ,  B01J37/0201 ,  B01J37/0205 ,  B01J37/082 ,  B01J37/088 ,  B01J2523/00 ,  Y02C20/10 ,  Y02T10/22 ,  Y02T10/24 ,  B01J2523/36 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/3725 ,  B01J2523/48 ,  B01J2523/822 ,  B01J2523/3718 ,  B01J2523/17 ,  B01J2523/18 ,  B01J2523/827 ,  B01J2523/19 ,  B01J2523/824 ,  B01J2523/828

Abstract: A nitrous oxide (N2O) removal catalyst composite is described, which includes: a N2O removal catalytic material on a carrier, wherein the catalytic material comprises a platinum group metal (PGM) component on a ceria-containing support having a single phase, cubic fluorite crystal structure. The catalytic material is effective to decompose nitrous oxide (N2O) to nitrogen (N2) and oxygen (O2) and/or to reduce N2O to N2 and water (H2O) and/or (CO2) under conditions of an exhaust stream of an internal combustion engine operating under conditions that are stoichiometric or lean with periodic rich transient excursions. Methods of making and using the same are also provided.

公开(公告)号：US20180111089A1

公开(公告)日：2018-04-26

申请号：US15562645

申请日：2016-03-30

Applicant: BASF Corporation

Inventor： Yuejin Li ,  Stanley A. Roth

IPC: B01D53/94 ,  B01J35/00 ,  B01J35/04 ,  B01J23/42 ,  B01J29/76 ,  B01J35/10 ,  B01J37/02

Abstract: Provided are multi-zone catalyst articles, methods of manufacturing multi-zone catalyst articles, and methods for controlling emissions in diesel engine exhaust streams with multi-zone catalyst articles, where the emission treatment system of various embodiments effectively treats diesel engine exhaust with a single multi-zone catalyst article.