Effects of Alkali and Alkaline Earth Cocations on the Activity and Hydrothermal Stability of Cu/SSZ-13 NH3-SCR Catalysts

For Cu/SSZ-13 SCR catalysts, there exists a conflict between low-temperature activity and hydrothermal stability of the catalysts where the former requires high Cu exchange levels but the latter requires intermediate exchange levels to avoid CuOx formation. We show that this conflict is solved by using cocations.