Abstract
The Selective Catalytic Reduction of nitrogen oxides (NOx) by NH3 is a well established after-treatment technology. The storage of NH3 is a key step of the overall SCR process, affecting the catalyst's deNOx efficiency. In the present study, the storage of NH3 over Fe- and Cu-zeolite based, Urea-SCR catalysts for mobile diesel engines was investigated by means of modeling and simulation. A single-site and a multi-site kinetic model, reported in literature, were adopted and integrated into the simulation environment LMS.Imagine.Lab AMESim. The models were compared showing the advantages and the limitations of these approaches. Further development is underway.
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