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The influence of vanadium oxide loading in the supported VO x /Al 2 O 3 catalyst system upon the dehydrated surface vanadia molecular structure, surface acidic properties, reduction characteristics and the catalytic oxidative dehydrogenation (ODH) of ethane to ethylene was investigated. Characterization of the supported VO x /Al 2 O 3 catalysts by XPS...
The coordination and oxidation states of surface vanadia species on different oxide supports were studied by in situ UV-Vis DRS and in situ Raman spectroscopy. Surface vanadia species remain essentially oxidized during the steady-state ethane oxidation reaction. Polymeric surface vanadia species are more reducible than isolated ones, but this has only a minor effect on the ethane oxidation reactions...
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