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：US20220212178A1

公开(公告)日：2022-07-07

申请号：US17594775

申请日：2020-04-28

Applicant: BASF Corporation

Inventor： Fudong LIU ,  Michel DEEBA ,  Ke-Bin LOW ,  Haiyang ZHU

IPC: B01J35/00 ,  B01J35/10 ,  B01J23/44 ,  B01J21/04 ,  B01J35/02 ,  B01J23/46 ,  B01J37/08 ,  B01J23/10 ,  B01J37/03 ,  B01J37/04 ,  B01J21/06 ,  B01J23/02 ,  B01D53/94 ,  F01N3/28

Abstract: The presently claimed invention provides an automotive catalyst comprising a platinum group metal selected from palladium, platinum, rhodium and any combination thereof; metal oxide nanoparticles; and a carrier, wherein the platinum group metal and the metal oxide nanoparticles are homogeneously dispersed on the carrier such as alumina component. The metal oxide nanoparticles have a D90 diameter in the range of 1.0 nm to 50 nm. The presently claimed invention also provides a layered catalytic article comprising catalyst comprising at least one platinum group metal; metal oxide nanoparticles; and a carrier. The presently claimed invention also provides a process for preparing the catalyst and the catalytic article, and a method of treating a gaseous exhaust stream comprising contacting the stream with the catalyst or catalytic article.

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).