Selective catalytic reduction of nitric oxide with ammonia over Fe-Cu modified highly silicated zeolites

[EN] In the present study, the solid-state ion exchange method (SSIE) was applied to introduce iron and copper into highly silicate zeolites: beta (BEA, Si/Al¿=¿12.5), ferrierite (FER, Si/Al¿=¿10) and mordenite (MOR, Si/Al¿=¿10). The activity of the prepared samples in the selective catalytic reduction of NO with ammonia (NH3-SCR) was measured. The highest performance was recorded for Cu-Fe-BEA followed by Cu-Fe-MOR while Cu-Fe-FER showed a low catalytic activity over the entire reaction temperature range. It is shown in this study that the zeolite framework is one of the parameters controlling the amount, environment and distribution of metal species formed during the ion exchange process in Cu-Fe-zeolite catalysts.Financial support by the MINECO of Spain through the Severo Ochoa (SEV-2016-0683) and CTQ2015-68951C3-1-R projects is gratefully acknowledged. The authors thank the Electron Microscopy Service of the Universitat Politecnica de Valencia, Spain for STEM experiments. J. Martinez-Ortigosa (SEV-2012-0267-02) is grateful to Severo Ochoa Program for a predoctoral fellowship.Jouini, H.; Mejri, I.; Martinez-Ortigosa, J.; Cerrillo, JL.; Mhamdi, M.; Palomares Gimeno, AE.; Delahay, G.... (2018). Selective catalytic reduction of nitric oxide with ammonia over Fe-Cu modified highly silicated zeolites. Solid State Sciences. 84:75-85. https://doi.org/10.1016/j.solidstatesciences.2018.08.008S75858