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Oxidation of benzene on a vanadium-molybdenum catalyst in the presence of thiophene |
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| Authors: | E V Boikov T V Sviridova M V Vishnetskaya D V Sviridov A I Kokorin |
| Institution: | 16652. Gubkin Russian State University of Oil and Gas, Moscow, Russia 26652. Faculty of Chemistry, Belarusian State University, Minsk, Belarus 36652. Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, Russia |
| Abstract: | The catalytic oxidation of benzene by air oxygen on a vanadium-molybdenum mixed oxide (1 ? x)V2O5 · xMoO3 (x = 0.25) over a temperature range of 200–320°C is studied. It is shown that the introduction of small amounts of thiophene into benzene inhibits the oxidation to maleic anhydride in this temperature range. It is established that the operation of the catalyst is accompanied by significant changes in its phase composition and morphology, with a few first operation cycles being characterized by a high conversion of benzene. A possible mechanism of the process is proposed. |
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