Abstract
The dehydrogenation of alkanes over supported chromium oxide catalysts in the absence of oxygen is of high interest for the industrial production of propene and isobutene. In this review, a critical overview is given of the current knowledge nowadays available about chromium-based dehydrogenation catalysts, in particularly the industrially used Cr/Al 2O 3 catalysts. It will be shown that detailed information on the dehydrogenation site can be obtained by using advanced spectroscopic tools.
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