The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 2023
Filed:
Mar. 19, 2021
Basf Corporation, Florham Park, NJ (US);
Wen-Mei Xue, Dayton, NJ (US);
Xiaofan Yang, Westfield, NJ (US);
Haiyang Zhu, Edison, NJ (US);
Stanley Roth, Yardley, PA (US);
Jeff Yang, Glen Rock, NJ (US);
Subramanian Prasad, Edison, NJ (US);
Ahmad Moini, Princeton, NJ (US);
BASF Corporation, Florham Park, NJ (US);
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 Cuand Cu(OH), and DRIFT spectroscopy of the catalyst exhibits perturbed T-O-T vibrational peaks corresponding to the Cuand Cu(OH). In spectra taken of the catalytic materials, a ratio of the Cuto the Cu(OH)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 Cupeak (area Cu/(area Cu+area Cu(OH))) increases by ≤20% upon aging at 800° C. for 16 hours in the presence of 10% HO/air, compared to the fresh state.