公开(公告)号：US20230081351A1

公开(公告)日：2023-03-16

申请号：US18055708

申请日：2022-11-15

Applicant: BASF Corporation

Inventor： Ivor BULL ,  Wen-Mei XUE ,  Patrick BURK ,  R. Samuel BOORSE ,  William M. JAGLOWSKI ,  Gerald Stephen KOERMER ,  Ahmad MOINI ,  Joseph A. PATCHETT ,  Joseph C. DETTLING ,  Matthew Tyler CAUDLE

IPC: B01J29/72 ,  B01J29/068 ,  B01D53/56 ,  B01D53/94 ,  B01J23/42 ,  B01J23/89 ,  B01J29/072 ,  B01J29/76 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01J29/74 ,  B01D53/86 ,  B01J29/06 ,  B01J29/80 ,  C01B39/46

Abstract: Zeolite catalysts and systems and methods for preparing and using zeolite catalysts having the CHA crystal structure are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stable at high reaction temperatures. The zeolite catalysts include a zeolite carrier having a silica to alumina ratio from about 15:1 to about 256:1 and a copper to alumina ratio from about 0.25:1 to about 1:1.

公开(公告)号：US20230191326A1

公开(公告)日：2023-06-22

申请号：US18000301

申请日：2021-06-24

Applicant: BASF CORPORATION

Inventor： Wen-Mei XUE ,  Ahmad MOINI ,  Ivan PETROVIC

IPC: B01D53/94 ,  B01J29/72 ,  B01J37/00 ,  B01J29/76

CPC classification number: B01D53/9418 ,  B01J29/723 ,  B01J37/0009 ,  B01J29/763 ,  B01D2255/20761 ,  B01D2255/50

Abstract: The present disclosure provides a method for preparing a selective catalytic reduction (SCR) catalyst, the SCR catalyst comprises a metal ion-exchanged zeolite. A method uses an in-situ ion exchange process. A process includes admixing a zeolite in the ammonium (NH4+) form with an aqueous mixture comprising water, a transition metal ion source, and, optionally, an acid, to form a slurry containing a metal ion-exchanged zeolite.

公开(公告)号：US20210229079A1

公开(公告)日：2021-07-29

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

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：US20230191376A1

公开(公告)日：2023-06-22

申请号：US17996978

申请日：2021-04-27

Applicant: BASF CORPORATION ,  HEESUNG CATALYSTS CORPORATION

Inventor： Matthias PETER ,  Claudia ZABEL ,  Maria HEENEMANN ,  Wen-Mei XUE ,  Eunseok KIM ,  Narayana K RAO ,  David POLLICK

IPC: B01J29/56 ,  B01J37/02 ,  B01J21/04 ,  B01D53/94 ,  F01N3/20

CPC classification number: B01J29/56 ,  B01D53/94 ,  B01J21/04 ,  B01J37/0225 ,  F01N3/2073

Abstract: The present invention relates to a composition comprising a non-zeolitic oxidic material comprising alumina; an 8-membered ring pore zeolitic material comprising one or more of copper and iron, wherein the framework structure of the zeolitic material comprises a tetravalent element Y, a trivalent element X and oxygen, wherein the molar ratio of Y:X, calculated as YO2X2O3, is in the range of from 2: 1 to 40: 1; wherein at least part of the outer surface of the zeolitic material is covered by a layer comprising the non-zeolitic oxidic material; wherein Y comprises one or more of Si, Sn, Ti, Zr and Ge and X comprises one or more of Al, B, In and Ga.

公开(公告)号：US20220032277A1

公开(公告)日：2022-02-03

申请号：US17309015

申请日：2019-10-30

Applicant: BASF Corporation

Inventor： 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: B01J29/76 ,  B01J37/04 ,  B01J37/08 ,  B01J37/02 ,  B01D53/94

Abstract: 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：US20210388747A1

公开(公告)日：2021-12-16

申请号：US17309116

申请日：2019-10-24

Applicant: BASF Corporation

Inventor： Wen-Mei XUE ,  Ivan PETROVIC ,  Jeff H. YANG ,  Stanley A. ROTH ,  Yuejin LI

IPC: F01N3/20 ,  B01J29/72 ,  B01J35/02 ,  B01J37/03 ,  B01J35/04 ,  B01J37/02 ,  B01J35/00

Abstract: The present disclosure provides catalyst compositions for NOx conversion and catalytic articles incorporating such catalyst compositions. Certain catalyst compositions include a zeolite with a silica-to-alumina ratio from 5 to 20 and sufficient Cu exchanged into cation sites of the zeolite such that the zeolite has a Cu/Al ratio of 0.1 to 0.5 and a CuO loading of 1 to 15 wt. %; and a copper trapping component in a concentration in the range of 1 to 20 wt. %, the copper trapping component including a plurality of particles having a particle size of about 0.5 to 20 microns. Certain catalyst compositions include, as the copper trapping component, alumina present as a plurality of alumina particles with a D90 particle size distribution in the range of 0.5 microns to 20 microns.