Review of the application of Cu-containing SSZ-13 in NH3-SCR-DeNOx and NH3-SCO

Abstract

The reduction of NO_x emissions has become one of the most important subjects in environmental protection. Cu-containing SSZ-13 is currently the state-of-the-art catalyst for the selective catalytic reduction of NO_x with ammonia (NH₃-SCR-DeNO_x). Although the current-generation catalysts reveal enhanced activity and remarkable hydrothermal stability, still open challenges appear. Thus, this review focuses on the progress of Cu-containing SSZ-13 regarding preparation methods, hydrothermal resistance and poisoning as well as reaction mechanisms in NH₃-SCR-DeNO_x. Remarkably, the paper reviews also the progress of Cu-containing SSZ-13 in the selective ammonia oxidation into nitrogen and water vapor (NH₃-SCO). The dynamics in the NH₃-SCR-DeNO_x and NH₃-SCO fields make this review timely.