Partial hydrogenation of benzene over platinum supported catalysts

Parlial hydrogenation of benzen to cryclohexene has been stuclied on Pt/Nylon 66, Pt/MgO and Pt/TiO2. An effect of the support on the selectivity to cycloexene was observed, Pt/Nyion showing the highest seleetivity, followed by Pt/MgO and Pt/TiO2. An interaction of platinum with the more basic supports (Nylon, MgO) and a pretreatment under oxidizing conditions results in a high selectivity to cyclohexene.