In-situ copper ion-exchange on pre-exchanged copper zeolitic material

US11660586B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Matthias Peter · Orpund, CH
• Karifala Dumbuya · Hannover, DE
• Miriam Schubert · Nienburg/Weser, DE
• Ahmad Moini · Princeton, US
• Yu Dai · Taichung, TW
• Stefan Maurer · Shanghai, CN
• Haiyang Zhu · Wenhe, CN
• Yi-Lin Liu · Beijing, CN
• Wen-Mei Xue
• Ming Ming WEI · Shanghai, CN
• Maria HEENEMANN · Hannover, DE

Key dates

• Filing date: Oct 30, 2019
• Grant date: May 30, 2023
• Expiry date: Dec 28, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2258/01
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

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).