Systems utilizing non-zeolitic metal-containing molecular sieves having the CHA crystal structure

US8617474B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Ivor Bull · Ludwigshafen, DE
• Gerald Stephen Koermer · Berkeley Heights, US
• Ahmad Moini · Princeton, US
• Signe Unverricht · Mannheim, DE

Key dates

• Filing date: Aug 22, 2011
• Grant date: Dec 31, 2013
• Expiry date: Aug 22, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Systems for treating exhaust gas incorporating catalysts comprising metal-loaded non-zeolitic molecular sieves having the CHA crystal structure, including Cu-SAPO-34, and methods for preparing such catalysts are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stability at high reaction temperatures.