The effect of Cu and Fe cations on NH3-supported proton transport in DeNOx-SCR zeolite catalysts

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Chen, Peirong ; Rauch, Dieter ; Weide, Philipp ; Schönebaum, Simon ; Simons, Thomas ; Muhler, Martin ; Moos, Ralf ; Simon, Ulrich:
The effect of Cu and Fe cations on NH3-supported proton transport in DeNOx-SCR zeolite catalysts.
Universität Bayreuth / Lehrstuhl für Funktionsmaterialien
In: Catalysis Science & Technology. Bd. 6 (2016) . - S. 3362-3366.
ISSN 2044-4761
DOI: https://doi.org/10.1039/C6CY00452K

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Abstract

Proton transport studies revealed the different influence of Fe and Cu cations on the NH3–zeolite interaction and the NO–zeolite interaction in the presence of adsorbed NH3. At low temperatures, after NH3 saturation, Cu-ZSM-5 is more reactive than Fe-ZSM-5 for NO activation forming highly mobile NH4+ intermediates.