Issue 34, 2006

On determining the nuclearity of iron sites in Fe-ZSM-5—a critical evaluation

Abstract

In order to interpret catalytic data on iron zeolites in terms of structure–activity relationships, reliable characterisation methods are needed. In particular, the nuclearity of the iron species is an important issue, since it is often invoked to explain catalytic activity. In the present contribution, we address the problem of the nuclearity of the iron species in Fe-ZSM-5 by a combination of techniques, that is, UV-Vis, EXAFS, Magnetic Circular Dichroism (MCD) and magnetisation measurements. Based on an in-depth analysis of these data, we show that some of the current interpretations of UV-Vis and EXAFS spectra need to be revised.

Graphical abstract: On determining the nuclearity of iron sites in Fe-ZSM-5—a critical evaluation

Article information

Article type
Invited Article
Submitted
02 May 2006
Accepted
29 Jun 2006
First published
24 Jul 2006

Phys. Chem. Chem. Phys., 2006,8, 3939-3950

On determining the nuclearity of iron sites in Fe-ZSM-5—a critical evaluation

G. D. Pirngruber, P. K. Roy and R. Prins, Phys. Chem. Chem. Phys., 2006, 8, 3939 DOI: 10.1039/B606205A

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