In this study, we investigate the effect of the intra-crystalline nanostructured
pore network on the activity of Fe-exchanged zeolites (Fe-ZSM-5, Fe-BEA, Fe,
FER, Fe-FAU) for the decomposition of nitrous oxide. The active site is modeled
as an isolated Fe cation located at the Brønsted acid site of ZSM-5, and the effects
of the extended zeolitic framework are explicitly included by utilizing a two-layered
ONIOM model (Dapprich et al., 1999). This theoretical approach allows studying
the unperturbed structure-activity relationship of the catalytic process of the
mononuclear iron species located in different frameworks.