TY - BOOK AU - Pérez Vélez, Roxana PY - 2014 DA - 2014// TI - Structural characterization of iron species in Fe-ZSM-5 catalysts and the elucidation of their role in the mechanism of NOx reactions AB - The selective catalytic reduction of NOx by ammonia (NH3-SCR) has widely applied in the abatement of NOx. Fe-ZSM-5 is a potential catalyst, showing high performance in standard SCR (mainly NO) at > 400°C and in fast SCR (NO/NO2 = 1) at ≥ 250°C. The identification of the active species in Fe-ZSM-5 catalysts and reaction mechanism for SCR reactions were investigated by in situ and operando EPR, UV-Vis and FTIR spectroscopy. The spectroscopic studies demonstrate the role of NO2 to reoxidize isolated Fe(II) to the active Fe(III) at β and γ sites, and attribute them the higher activity in fast SCR. UR - http://rosdok.uni-rostock.de/resolve?urn=urn:nbn:de:gbv:28-diss2015-0041-9 UR - http://rosdok.uni-rostock.de/resolve?urn=urn:nbn:de:gbv:28-diss2015-0041-9&pdf UR - http://nbn-resolving.de/urn:nbn:de:gbv:28-diss2015-0041-9 LA - English N1 - vorgelegt von : Roxana Pérez Vélez ID - 818337222 ER -