Abstract
The application of analytical transmission electron microscopy to the characterisation of catalytic materials is presented by studying mechanically activated vanadium pentoxide V2O5. Local morphology and lattice distortion are studied by TEM while the oxidation states are determined by EELS. The mechanical activation can be described as a two-stage process: crushing of large crystals into small ones (macroscopic process) followed by amorphisation and reagglomeration of the fragments (microscopic process). No milling equilibrium state can be found. Energy-loss spectra reveal the reduction of vanadium via oxygen loss. The formation and distribution of V4+ or V3+ species depends on the history of milling.
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© 2003 Springer Science+Business Media Dordrecht
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Su, D.S. (2003). Analytical Tem Characterisation of Catalytic Materials. In: Liz-Marzán, L.M., Giersig, M. (eds) Low-Dimensional Systems: Theory, Preparation, and Some Applications. NATO Science Series, vol 91. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0143-4_19
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DOI: https://doi.org/10.1007/978-94-010-0143-4_19
Publisher Name: Springer, Dordrecht
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