Modelling Selective Catalytic Reduction (SCR) of NOx to N2 over Cu-SSZ-13

Abstract

Modelling Selective Catalytic Reduction (SCR) of NOx to N2 over Cu-SSZ-13 Reduction of NOx emissions from diesel engine exhaust is an environmental issue driven by increasingly stringent emission regulations. Cu-SSZ-13 catalysts have been shown to be promising for this application due to their hydrothermal stability and selectivity in reducing NOx to N2using NH3 compared to other zeolite catalysts. SOx formed from the combustion of ppm levels of sulfur in diesel fuel deactivates the Cu-SSZ-13 catalyst. However, its effect on Cu2+ and CuOH active sites and the SCR mechanism is unclear and under debate