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Role of Nitrate Species in the “NO2-SCR” Mechanism over a Commercial Fe-zeolite Catalyst for SCR Mobile Applications

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Abstract

The NO2-SCR reaction is studied by transient reaction analysis over a Fe-zeolite commercial catalyst. It is proposed that the NO2-SCR reaction occurs according to a mechanism wherein surface nitrates are first formed by NO2 disproportionation, followed by their catalytic reduction to nitrogen by ammonia.

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Acknowledgments

Financial support from Daimler AG is gratefully acknowledged. The Authors wish to thank Dr. Daniel Chatterjee and Dr. Michel Weibel for useful and stimulating discussions.

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Authors and Affiliations

  1. Dipartimento di Energia, Laboratory of Catalysis and Catalytic Processes, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy

    Antonio Grossale, Isabella Nova & Enrico Tronconi

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  1. Antonio Grossale
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  2. Isabella Nova
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  3. Enrico Tronconi
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Correspondence to Enrico Tronconi.

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Grossale, A., Nova, I. & Tronconi, E. Role of Nitrate Species in the “NO2-SCR” Mechanism over a Commercial Fe-zeolite Catalyst for SCR Mobile Applications. Catal Lett 130, 525–531 (2009). https://doi.org/10.1007/s10562-009-9942-x

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  • DOI: https://doi.org/10.1007/s10562-009-9942-x

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