Copper containing levyne molecular sieve for selective reduction of NOx

US9242241B2 · kind B2 · utility

Assignee

• BASE SE · DE

Inventors

• Ivor Bull · Ludwigshafen, DE
• Ulrich Müller · Neustadt, DE
• Bilge Yilmaz · Mannheim, DE

Key dates

• Filing date: Oct 11, 2010
• Grant date: Jan 26, 2016
• Expiry date: Jul 28, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02C20/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Aspects of the present invention relates to a copper containing Levyne molecular sieve having a silica to alumina mole ratio less than 30 and a Cu:Al atomic ratio less than 0.45, wherein the Levyne molecular sieve retains at least 60% of its surface area after exposure to a temperature of from about 750° C. to about 950° C. in the present of up to 10 volume percent water vapor for a time ranging from about 1 to about 48 hours.