OC49 Kinetic Modeling of Hysteresis Effects in Low-T NH3-SCR

Thursday, June 9, 2011: 8:00 AM
Cartier Ballroom (Detroit Marriott Hotel at the Renaissance Center )
Isabella Nova1, Massimo Colombo1, Enrico Tronconi2, Volker Schmeisser3 and Michel Weibel3, (1)Dipartimento Di Energia, Politecnico di Milano, Milano, Italy, (2)Dipartimento di Energia, Politecnico di Milano, Milano, Italy, (3)Daimler AG, Stuttgart, Germany
The existence of an optimum NH3 surface concentration in the Standard SCR reaction over Fe-zeolite at low-T was evidenced by kinetic runs. A red-ox kinetic model accounts for dynamic and hysteresis effects observed in lab scale and test bench runs. This has obvoius practical implications e.g. in the development of NH3 dosing strategies.

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