Copper-promoted GMElinite and use thereof in the selective catalytic reduction of NOX

US11298656B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Mathias Feyen · Ludwigshafen, DE
• Ulrich Mueller · Hamburg, DE
• Faruk Oezkirim · Ludwigshafen, DE
• Stefan Dumser · Ludwigshafen, DE
• Natalia Trukhan · Ludwigshafen, DE
• Michaela Maltry · Heßheim, DE
• Stefan Maurer · Shanghai, CN

Key dates

• Filing date: Jun 2, 2017
• Grant date: Apr 12, 2022
• Expiry date: Jun 2, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2229/62
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A catalyst for the selective catalytic reduction of NOx comprises a zeolitic material which comprises (A) one or more zeolites having a GME framework structure containing YO2 and X2O3, and optionally further comprises one or more zeolites having a CHA framework structure containing YO2 and X2O3, and/or comprises, (B) one or more zeolite intergrowth phases of one or more zeolites having a GME framework structure containing YO2 and X2O3 and one or more zeolites having a CHA framework structure containing YO2 and X2O3, wherein Y is a tetravalent element, and X is a trivalent element, and the zeolitic material contains Cu and/or Fe as non-framework elements in an amount ranging from 0.1 to 15 wt. % calculated as the element and based on 100 wt. % of YO contained in the zeolitic material. Also provided are a process for its preparation, and a use in a method for the selective catalytic reduction of NOx.