Application of a Global Kinetic Model for an SCR Coated on Filter (SCR-F) Catalyst for Automotive Applications

Selective Catalytic Reduction (SCR) catalysts [1] coated on diesel particulate filter [2], SCRF, have been introduced for automotive applications in the last years due to the capability of reducing NOx and PM simultaneously below the limits imposed by emissions regulations in automotive diesel engine applications. In this context, the performance of a commercial silicon carbide SCR-F for controlling NOx emissions in an automotive diesel engine was analyzed both experimentally and numerically for different soot loading levels with the aim to investigate its catalytic properties and to build a simulation model of the aftertreament device which is capable of predicting NOx conversion efficiency, NH3 storage capacity and soot conversion due to passive regeneration.