CATALYSTS, SYSTEMS AND METHODS UTILIZING NON-ZEOLITIC METAL-CONTAINING MOLECULAR SIEVES HAVING THE CHA CRYSTAL STRUCTURE

摘要

Catalysts comprising metal-loaded non-zeolitic molecular sieves having the CHA crystal structure, including Cu-SAPO-34, methods for preparing such catalysts, and systems and methods for treating exhaust gas incorporating 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.