Role of the nature of the acid sites in the oxydehydrogenation of propane on a VPO/TiO2 catalyst. An in situ FT-IR spectroscopy investigation |
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| Authors: | L. Savary J. Saussey G. Costentin M. M. Bettahar J. C. Lavalley M. Gubelmann-Bonneau |
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| Affiliation: | (1) Laboratoire Catalyse et Spectrochimie, ISMRA, 6 Bd du Maréchal Juin, 14032 Caen Cedex, France;(2) Rhône-Poulenc Recherches, 52 rue de la Haie Coq, 93308 Aubervilliers, France |
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| Abstract: | Catalytic activity and surface acidity during the oxydehydrogenation of propane over a VPO/TiO2 catalyst were determined by a dynamic in situ FT-IR spectroscopy technique at 350°C. Pyridine was used as a probe molecule for the acidity measurements. The obtained results show that propene formation is linked to Brønsted acid sites and that water increases the number of these sites which, in turn, increases propene selectivity. |
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| Keywords: | oxydehydrogenation propane propene in situ FT-IR technique VPO/TiO2 catalyst |
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