Structure and Reactivity of Framework and Extraframework Iron in Fe-Silicalite as Investigated by Spectroscopic and Physicochemical Methods

The application of IR, Raman, UV–visible, EPR, XANES, EXAFS, and TPR techniques to the determination of the Fe3+local environment in Fe-silicalite is described and discussed. These methods give information concerning the structural changes of the zeolitic structure, upon thermal treatments and inter...

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Veröffentlicht in:	Journal of Catalysis 1996-02, Vol.158 (2), p.486-501
Hauptverfasser:	Bordiga, S., Buzzoni, R., Geobaldo, F., Lamberti, C., Giamello, E., Zecchina, A., Leofanti, G., Petrini, G., Tozzola, G., Vlaic, G.
Format:	Artikel
Sprache:	eng
Schlagworte:	40 CHEMISTRY ABSORPTION SPECTROSCOPY Catalysis CATALYSTS Catalysts: preparations and properties Chemistry ELECTRON SPIN RESONANCE Exact sciences and technology General and physical chemistry IRON COMPOUNDS RAMAN SPECTROSCOPY REDUCTION SORPTIVE PROPERTIES STRUCTURAL CHEMICAL ANALYSIS Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry X-RAY SPECTROSCOPY ZEOLITES
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Zusammenfassung:	The application of IR, Raman, UV–visible, EPR, XANES, EXAFS, and TPR techniques to the determination of the Fe3+local environment in Fe-silicalite is described and discussed. These methods give information concerning the structural changes of the zeolitic structure, upon thermal treatments and interaction with adsorbates. In particular the effect of template burning at 773 K or at 973 K on the local Fe3+environment has been discussed in detail. The reactivity of the zeolite towards NH3has also been considered.
ISSN:	0021-9517 1090-2694
DOI:	10.1006/jcat.1996.0048