公开(公告)号：US10792616B2

公开(公告)日：2020-10-06

申请号：US15752112

申请日：2016-08-12

Applicant: BASF Corporation

Inventor： Xiaoming Wang ,  Xiaofan Yang ,  Meaghan C. McGuire ,  Geoffrey M. Johnson ,  John K. Hochmuth

IPC: B01D53/94 ,  B01J29/04 ,  B01J37/02 ,  B01J35/00 ,  F01N3/20

Abstract: The present disclosure is directed to SCR catalysts, methods for their manufacture, and methods of treating emissions in an exhaust stream with them. The SCR catalysts are produced from pillaring and ion exchanging synthetic phyllosilicates, particularly hydrothermally synthesized phyllosilicates.

公开(公告)号：US20180236402A1

公开(公告)日：2018-08-23

申请号：US15752112

申请日：2016-08-12

Applicant: BASF Corporation

Inventor： Xiaoming Wang ,  Xiaofan Yang ,  Meaghan C. McGuire ,  Geoffrey M. Johnson ,  John K. Hochmuth

IPC: B01D53/94 ,  B01J29/04 ,  F01N3/20 ,  B01J37/02

Abstract: The present disclosure is directed to SCR catalysts, methods for their manufacture, and methods of treating emissions in an exhaust stream with them. The SCR catalysts are produced from pillaring and ion exchanging synthetic phyllosilicates, particularly hydrothermally synthesized phyllosilicates.

公开(公告)号：US20180038252A1

公开(公告)日：2018-02-08

申请号：US15555117

申请日：2016-03-24

Applicant: BASF CORPORATION

Inventor： Xiaofan Yang ,  Wen-Mei Xue ,  John K. Hochmuth ,  Matthew J. Schladt ,  Yuejin Li

IPC: F01N3/08 ,  B01J23/46 ,  B01J29/76 ,  B01J35/00 ,  F01N13/00 ,  B01D53/94 ,  F01N3/10 ,  F01N3/20 ,  F01N3/035 ,  B01J23/44 ,  B01J35/04

CPC classification number: F01N3/0814 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/944 ,  B01D53/9445 ,  B01D53/945 ,  B01D53/9463 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/904 ,  B01D2255/9155 ,  B01D2258/014 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/464 ,  B01J29/04 ,  B01J29/072 ,  B01J29/763 ,  B01J35/0006 ,  B01J35/04 ,  F01N3/035 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/101 ,  F01N3/2066 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2370/02 ,  Y02T10/22 ,  Y02T10/24

Abstract: Described are exhaust gas treatment systems for treatment of a gasoline engine exhaust gas stream containing NOx, particulate matter, and sulfur. The exhaust gas treatment system comprises: one or more catalytic articles selected from a three-way conversion catalyst (TWC), a lean NOx trap (LNT), and an integrated LNT-TWC; a platinum-containing catalytic article downstream from the one or more catalytic articles; and one or more selective catalytic reduction (SCR) catalytic articles immediately downstream from the platinum-containing catalytic article, the one or more SCR catalytic articles including a molecular sieve. The system stabilizes the SCR catalytic article from poisoning by sulfur.

公开(公告)号：US09764313B2

公开(公告)日：2017-09-19

申请号：US14741754

申请日：2015-06-17

Applicant: BASF Corporation

Inventor： Natalia Trukhan ,  Ulrich Müller ,  Michael Breen ,  Barbara Slawski ,  Qi Fu ,  Jaya L. Mohanan ,  Martin W. Kraus ,  Ahmad Moini ,  Xiaofan Yang ,  John K. Hochmuth

IPC: B01J29/76 ,  B01J37/02 ,  B01J35/08 ,  B01J35/02 ,  B01D53/94 ,  B01D53/86 ,  B01J35/00

CPC classification number: B01J29/763 ,  B01D53/8628 ,  B01D53/9418 ,  B01D53/9427 ,  B01D53/9477 ,  B01D2251/2062 ,  B01D2251/2067 ,  B01D2251/208 ,  B01D2253/1085 ,  B01D2255/104 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/20723 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20746 ,  B01D2255/20753 ,  B01D2255/20761 ,  B01D2255/209 ,  B01D2255/40 ,  B01D2255/407 ,  B01D2255/50 ,  B01D2255/9032 ,  B01D2255/904 ,  B01D2255/911 ,  B01D2255/9202 ,  B01D2255/9205 ,  B01D2255/9207 ,  B01D2257/402 ,  B01D2257/404 ,  B01D2257/406 ,  B01D2258/012 ,  B01J35/002 ,  B01J35/023 ,  B01J35/08 ,  B01J37/0228 ,  B01J37/0246 ,  Y02C20/10

Abstract: Described is a selective catalytic reduction material comprising a spherical particle including an agglomeration of crystals of a molecular sieve. The catalyst is a crystalline material that is effective to catalyze the selective catalytic reduction of nitrogen oxides in the presence of a reductant at temperatures between 200° C. and 600° C. A method for selectively reducing nitrogen oxides and an exhaust gas treatment system are also described.

公开(公告)号：US20240293805A1

公开(公告)日：2024-09-05

申请号：US18030267

申请日：2021-10-05

Applicant: BASF Corporation

Inventor： David M. Youngren ,  Xiaofan Yang ,  Xinyi Wei ,  Matthew T. Caudle

IPC: B01J29/072 ,  B01D53/94 ,  B01J35/33 ,  B01J35/56

CPC classification number: B01J29/072 ,  B01D53/945 ,  B01J35/33 ,  B01J35/56 ,  B01D2255/206 ,  B01D2255/207 ,  B01D2255/50 ,  B01D2255/91 ,  B01D2255/9155 ,  B01D2257/404 ,  B01D2258/012 ,  B01D2258/014 ,  B01D2258/018

Abstract: The application provides articles, systems, and methods for adsorbing and desorbing nitrogen oxides (NOx) at desired temperatures. The catalytic article comprises a NOx adsorber composition comprising a platinum group metal (PGM) component disposed on or impregnated in a support material, and a substrate, wherein the catalytic article further comprises a magnetic material capable of inductive heating in response to an applied alternating electromagnetic field. The catalytic article further comprises a conductor associated therewith for receiving current and generating an alternating electromagnetic field in response thereto, wherein the conductor is positioned such that the generated alternating electromagnetic field is applied to at least a portion of the magnetic material. This field can inductively heat the magnetic material to heat the NOx adsorber composition to desorb the NOx from the NOx adsorber composition.

公开(公告)号：US20240024860A1

公开(公告)日：2024-01-25

申请号：US18320311

申请日：2023-05-19

Applicant: BASF CORPORATION

Inventor： Xiaofan Yang ,  Matthew Tyler Caudle

IPC: B01J29/76 ,  B01D53/94 ,  B01J23/745 ,  B01J23/83 ,  B01J35/00 ,  B01J35/04 ,  B01J23/89 ,  B01D53/86 ,  F01N3/20 ,  F01N3/28

CPC classification number: B01J29/763 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/9436 ,  B01D53/944 ,  B01D53/945 ,  B01J23/745 ,  B01J23/83 ,  B01J35/0013 ,  B01J35/0033 ,  B01J35/04 ,  B01J23/89 ,  B01D53/86 ,  F01N3/20 ,  B01J23/894 ,  F01N3/2013 ,  F01N3/2828 ,  B01D2255/102 ,  B01D2255/206 ,  B01D2255/2068 ,  B01D2255/20738 ,  B01D2255/20746 ,  B01D2255/91 ,  B01D2255/9202 ,  B01D2258/012 ,  B01D2257/708 ,  B01D2255/209 ,  B01J2523/00 ,  B01D2257/404 ,  B01D2257/406 ,  B01D2257/502 ,  B01D2257/702 ,  B01J37/04

Abstract: The invention provides a catalyst composition, including a mixture of catalytically active particles and a magnetic material, such as superparamagnetic iron oxide nanoparticles, capable of inductive heating in response to an applied alternating electromagnetic field. The catalytically active particles will typically include a base metal, platinum group metal, oxide of base metal or platinum group metal, or combination thereof, and will be adapted for use in various catalytic systems, such as diesel oxidation catalysts, catalyzed soot filters, lean NOx traps, selective catalytic reduction catalysts, ammonia oxidation catalysts, or three-way catalysts. The invention also includes a system and method for heating a catalyst material, which includes a catalyst article that includes the catalyst composition and a conductor for receiving current and generating an alternating electromagnetic field in response thereto, the conductor positioned such that the generated alternating electromagnetic field is applied to at least a portion of the magnetic material.

公开(公告)号：US20230364596A1

公开(公告)日：2023-11-16

申请号：US18029840

申请日：2021-10-01

Applicant: BASF Corporation

Inventor： Matthew T. Caudle ,  Xiaofan Yang ,  Michel Deeba

IPC: B01J35/00 ,  B01J35/04 ,  B01J23/80 ,  B01J21/04 ,  B01J35/02 ,  B01J37/04 ,  B01J37/03 ,  B01J37/00 ,  B01D53/94 ,  F01N3/20 ,  F01N3/28 ,  F01N3/10

CPC classification number: B01J35/0033 ,  B01J35/04 ,  B01J35/0006 ,  B01J23/80 ,  B01J21/04 ,  B01J35/023 ,  B01J37/04 ,  B01J37/038 ,  B01J37/0036 ,  B01D53/9495 ,  F01N3/2013 ,  F01N3/2828 ,  F01N3/2066 ,  F01N3/101 ,  B01D2255/9155 ,  B01D2258/012 ,  F01N2330/06 ,  F01N2370/04 ,  F01N2510/068 ,  F01N2510/063 ,  F01N2240/05

Abstract: The present disclosure provides a catalyst substrate, including: a) a ceramic material and b) a magnetic material, wherein the magnetic material is capable of inductive heating in response to an applied alternating magnetic field. The magnetic material can be associated with the ceramic material in various ways (e.g., dispersed within at least a portion of the ceramic material or contained within pores of the ceramic material). The disclosure further provides a catalyst article including such a catalyst substrate and at least one catalytic washcoat layer deposited thereon. The catalyst article can be adapted for various purposes, depending on the composition of the catalytic washcoat. The disclosure also includes a system and method for heating a catalyst material, which includes the catalyst article and a conductor for receiving current and generating an alternating electromagnetic field in response thereto.

公开(公告)号：US11724248B2

公开(公告)日：2023-08-15

申请号：US17206963

申请日：2021-03-19

Applicant: BASF Corporation

Inventor： Wen-Mei Xue ,  Xiaofan Yang ,  Haiyang Zhu ,  Stanley Roth ,  Jeff Yang ,  Subramanian Prasad ,  Ahmad Moini

IPC: B01J29/04 ,  B01D53/94 ,  B01J23/42 ,  B01J35/04 ,  G01N21/3563 ,  G01N21/35

CPC classification number: B01J29/044 ,  B01D53/9418 ,  B01D53/9468 ,  B01J23/42 ,  B01J35/04 ,  G01N21/3563 ,  B01D2255/102 ,  B01D2255/20761 ,  B01D2255/9022 ,  B01D2255/9155 ,  G01N2021/3595

Abstract: The present disclosure relates to copper-containing molecular sieve catalysts that are highly suitable for the treatment of exhaust containing NOx pollutants. The copper-containing molecular sieve catalysts contain ion-exchanged copper as Cu+2 and Cu(OH)+1, and DRIFT spectroscopy of the catalyst exhibits perturbed T-O-T vibrational peaks corresponding to the Cu+2 and Cu(OH)+1. In spectra taken of the catalytic materials, a ratio of the Cu+2 to the Cu(OH)+1 peak integration areas preferably can be ≥1. The copper-containing molecular sieve catalysts are aging stable such that the peak integration area percentage of the Cu+2 peak (area Cu+2/(area Cu+2+area Cu(OH)+1)) increases by ≤20% upon aging at 800° C. for 16 hours in the presence of 10% H2O/air, compared to the fresh state.

公开(公告)号：US20190083967A1

公开(公告)日：2019-03-21

申请号：US16142451

申请日：2018-09-26

Applicant: BASF Corporation

Inventor： Xiaofan Yang ,  Weiyong Tang ,  Ze Zhang

IPC: B01J38/08 ,  B01J29/90 ,  B01J29/76 ,  B01D53/94 ,  B01D53/96 ,  F01N3/20 ,  F01N3/28

Abstract: The present invention provides methods for low temperature desulfating sulfur-poisoned SCR catalysts, and emission control systems adapted to apply such desulfating methods, in order to regenerate catalytic NOx conversion activity. The methods are adapted for treating an SCR catalyst to desorb sulfur from the surface of the SCR catalyst and increase NOx conversion activity of the SCR catalyst, the treating step including treating the SCR catalyst with a gaseous stream comprising a reductant for a first treatment time period and at a first treatment temperature, wherein the first treatment temperature is about 350° C. or less, followed by a second treatment time period and a second treatment temperature higher than the first treatment temperature, wherein the molar ratio of reductant to NOx during the treating step is about 1.05:1 or higher.

公开(公告)号：US20190070596A1

公开(公告)日：2019-03-07

申请号：US16184162

申请日：2018-11-08

Applicant: BASF CORPORATION

Inventor： Xiaofan Yang ,  Matthew Tyler Caudle

IPC: B01J29/76 ,  B01J23/745 ,  B01J23/83 ,  B01J35/00 ,  B01J35/04 ,  B01D53/94 ,  F01N3/20 ,  F01N3/28

Abstract: The invention provides a catalyst composition, including a mixture of catalytically active particles and a magnetic material, such as superparamagnetic iron oxide nanoparticles, capable of inductive heating in response to an applied alternating electromagnetic field. The catalytically active particles will typically include a base metal, platinum group metal, oxide of base metal or platinum group metal, or combination thereof, and will be adapted for use in various catalytic systems, such as diesel oxidation catalysts, catalyzed soot filters, lean NOx traps, selective catalytic reduction catalysts, ammonia oxidation catalysts, or three-way catalysts. The invention also includes a system and method for heating a catalyst material, which includes a catalyst article that includes the catalyst composition and a conductor for receiving current and generating an alternating electromagnetic field in response thereto, the conductor positioned such that the generated alternating electromagnetic field is applied to at least a portion of the magnetic material.