公开(公告)号：US11890600B2

公开(公告)日：2024-02-06

申请号：US17754951

申请日：2020-10-19

申请人： BASF Corporation

发明人： Xinyi Wei ,  Evan Vincent Miu ,  Xiaoming Xu ,  Jia Cheng Liu ,  Stefan Maurer

IPC分类号： B01J29/06 ,  B01J29/74 ,  B01J29/80 ,  B01J23/42 ,  B01J21/08 ,  B01J35/00 ,  B01J35/04 ,  B01D53/94 ,  F01N3/28 ,  B01J29/67

CPC分类号： B01J29/67 ,  B01D53/944 ,  B01D53/9422 ,  B01D53/9468 ,  B01D53/9472 ,  B01D53/9477 ,  B01J21/08 ,  B01J23/42 ,  B01J29/7415 ,  B01J29/80 ,  B01J35/0006 ,  B01J35/0013 ,  B01J35/04 ,  F01N3/2803 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/50 ,  B01D2255/9022 ,  B01D2255/9032 ,  B01D2255/9035 ,  B01D2255/9155 ,  B01D2255/9202 ,  B01J2029/062 ,  F01N2370/04

摘要： The present disclosure provides Low Temperature NOx-Absorber (LT-NA) catalyst compositions, catalyst articles, and an emission treatment system for treating an exhaust gas, each including the LT-NA catalyst compositions. Further provided are methods for reducing a NOx level in an exhaust gas stream using the LT-NA catalyst articles. In particular, the LT-NA catalyst compositions include a first zeolite, a first palladium component, and a plurality of platinum nanoparticles. The LT-NA catalyst compositions exhibit enhanced regeneration efficiency with respect to NOx adsorption capacity, even after hydrothermal aging.

公开(公告)号：US11660586B2

公开(公告)日：2023-05-30

申请号：US17309015

申请日：2019-10-30

申请人： BASF Corporation

发明人： Matthias Peter ,  Karifala Dumbuya ,  Miriam Schubert ,  Ahmad Moini ,  Yu Dai ,  Stefan Maurer ,  Haiyang Zhu ,  Yi Liu ,  Wen-Mei Xue ,  Ming-Ming Wei ,  Maria Heenemann

IPC分类号： B01J29/76 ,  B01D53/94 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08

CPC分类号： B01J29/763 ,  B01D53/9418 ,  B01J37/0215 ,  B01J37/04 ,  B01J37/082 ,  B01D2255/2065 ,  B01D2255/2092 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/20761 ,  B01D2255/30 ,  B01D2255/50

摘要： A process for preparing a catalyst comprising a zeolitic material comprising copper, the process comprising (i) preparing an aqueous mixture comprising water, a zeolitic material comprising copper, a source of copper other than the zeolitic material comprising copper, and a non-zeolitic oxidic material selected from the group consisting of alumina, silica, titania, zirconia, ceria, a mixed oxide comprising one or more of Al, Si, Ti, Zr, and Ce and a mixture of two or more thereof; (ii) disposing the mixture obtained in (i) on the surface of the internal walls of 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; and optionally drying the substrate comprising the mixture disposed thereon; (iii) calcining the substrate obtained in (ii).

公开(公告)号：US11511228B2

公开(公告)日：2022-11-29

申请号：US17309151

申请日：2019-10-24

申请人： BASF Corporation

发明人： Stefan Maurer ,  Jia Di Zhang ,  Yu Dai ,  Yu Fen Hao ,  Ming Ming Wei ,  Teng Shen

IPC分类号： B01D53/94 ,  B01J23/40 ,  B01J29/76 ,  B01J35/00 ,  B01J35/04 ,  B01J35/10 ,  B01J37/02 ,  F01N3/10 ,  F01N3/20 ,  F01N3/28

摘要： The present invention relates generally to the field of exhaust treatment systems for purifying exhaust gas discharged from a lean burn engine. The exhaust treatment system comprises a Diesel Oxidation Catalyst (DOC), a Catalyzed Soot Filter (CSF), a reductant injector, an AEI zeolite based Selective Catalyzed Reduction (SCR) catalyst and an Ammonia Oxidation Catalyst (AMOX) downstream to the AEI zeolite based SCR catalyst.

公开(公告)号：US11413607B2

公开(公告)日：2022-08-16

申请号：US17250103

申请日：2019-05-29

申请人： BASF Corporation

发明人： Jia Cheng Liu ,  Evan Vincent Miu ,  Xiaoming Xu ,  Xinyi Wei ,  Stefan Maurer

IPC分类号： B01D53/94 ,  B01J29/67 ,  B01J29/74 ,  B01J35/00 ,  B01J35/02 ,  B01J35/04 ,  B01J35/10 ,  B01J37/00 ,  B01J37/03 ,  F01N3/28

摘要： The present disclosure is directed to a Low Temperature NOx-Absorber (LT-NA) catalyst composition which exhibits NOx adsorption in a broad temperature and space velocity range, and shifts NOx desorption to a desired temperature range. In particular, the LT-NA composition includes a large pore zeolite containing a palladium component and a small or medium pore zeolite containing a palladium component. Further provided is a catalyst article including the LT-NA catalyst composition, an emission treatment system for treating an exhaust gas including the catalyst article, and methods for reducing a NOx level in an exhaust gas stream using the catalyst article.

公开(公告)号：US11298656B2

公开(公告)日：2022-04-12

申请号：US16304511

申请日：2017-06-02

申请人： BASF Corporation

发明人： Mathias Feyen ,  Ulrich Mueller ,  Faruk Oezkirim ,  Stefan Dumser ,  Natalia Trukhan ,  Michaela Maltry ,  Stefan Maurer

IPC分类号： B01J29/80 ,  B01D53/94 ,  B01J37/30 ,  B01D53/56 ,  B01J29/76 ,  C01B39/02 ,  B01J35/00 ,  B01D53/60

摘要： A catalyst for the selective catalytic reduction of NOx comprises a zeolitic material which comprises (A) one or more zeolites having a GME framework structure containing YO2 and X2O3, and optionally further comprises one or more zeolites having a CHA framework structure containing YO2 and X2O3, and/or comprises, (B) one or more zeolite intergrowth phases of one or more zeolites having a GME framework structure containing YO2 and X2O3 and one or more zeolites having a CHA framework structure containing YO2 and X2O3, wherein Y is a tetravalent element, and X is a trivalent element, and the zeolitic material contains Cu and/or Fe as non-framework elements in an amount ranging from 0.1 to 15 wt. % calculated as the element and based on 100 wt. % of YO contained in the zeolitic material. Also provided are a process for its preparation, and a use in a method for the selective catalytic reduction of NOx.