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NH3-NO/NO2 SCR for diesel exhausts after treatment: mechanism and modelling of a catalytic converter |
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| Authors: | Nova Isabella Ciardelli Cristian Tronconi Enrico Chatterjee Daniel Weibel Michel |
| Affiliation: | (1) Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, P.zza L. Da Vinci 32, 20133 Milano, Italy;(2) DaimlerChrysler AG Abteilung RBP/C, HPC: 096-E220, D-70546 Stuttgart, Germany |
| Abstract: | We review herein the key mechanistic and kinetic features of the reactions involved in the NH3-NO/NO2 SCR system investigated by dynamic reactive experiments over a V-based commercial powdered catalyst, eventually leading to the proposal of an original redox scheme which accounts for stoichiometry, selectivity and intrinsic kinetics of the global SCR process. |
| Keywords: | diesel– urea SCR SCR selective catalytic reduction standard SCR fast SCR redox kinetic scheme modelling dynamic methods ammonium nitrate |
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