The transformation of propane into aromatics has been carried out in the presence of oxygen, on a combined catalyst formed by an oxydehydrogenation (ODH) function (MgO-supported vanadium oxide catalyst) and a cyclo-aromatization (H-ZSM-5 or
Ga
ZSM-5
) function. When the two functions are in close proximity, the yield to aromatics and the selectivity to alkylbenzenes increases with respect to the zeolitic catalysts in absence of the ODH function. The influence of reaction temperature, partial pressure of oxygen and the relative amount of the two catalytic functions on propane conversion and selectivity has been studied.
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