Direct and Oxidative Dehydrogenation

In each of the studies described so far, XPS was measured under UHV conditions. However, previous studies of oxide catalysts [100] have shown that by using a specially designed high-pressure in situ XPS apparatus, XP spectra can be measured under reaction conditions in the mQUbar pressure range. This technique was appUed to a selection of , 0 /5-alumina catalysts (l-8wt% V) to determine their electronic structure under oxidative and reaction (n-butane) atmospheres 

By combining the techniques of XPS and XAS, insights into the electronic structure of the dehydrogenation catalysts V Oy/alumina have been observed, and, by correlation with activity data, a greater understanding of the dehydrogenation mechanism and subsequent coke formation, was possible. 

---