Abstract
Ce0.46Zr0.54O2 solid solution prepared using a cellulose template was employed as a carrier for vanadium catalysts of the oxidative dehydrogenation of propane. The properties of VO х /Ce0.46Zr0.54O2 catalyst (5 wt % vanadium) are compared with the properties of the neat support. The carrier and catalyst are studied by means of BET, SEM, DTA, XRD, and Raman spectroscopy. It is shown that the CeVO4 phase responsible for the ODH process is formed upon interaction between vanadate ions and cerium ions on the surface of the solid solution. The catalytic properties of the catalyst and the support are studied in the propane oxidation reaction at temperatures of 450 and 500°C with pulse feeding of the reagent. It is found that the complete oxidation of propane occurs on the support with formation of CO2 and H2O. Three products (propene, CO2, and H2O) form in the presence of the vanadium catalyst. It is suggested that there are two types of catalytic centers on the catalyst’s surface. It is concluded that the centers responsible for the complete oxidation of propane are concentrated mainly on the carrier, while the centers responsible for propane ODH are on the CeVO4.
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Original Russian Text © A.O. Turakulova, A.N. Kharlanov, A.V. Levanov, O.Ya. Isaikina, V.V. Lunin, 2017, published in Zhurnal Fizicheskoi Khimii, 2017, Vol. 91, No. 1, pp. 21–29.
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Turakulova, A.O., Kharlanov, A.N., Levanov, A.V. et al. Catalytic properties of the VO х /Ce0.46Zr0.54O2 oxide system in the oxidative dehydrogenation of propane. Russ. J. Phys. Chem. 91, 17–25 (2017). https://doi.org/10.1134/S0036024417010307
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DOI: https://doi.org/10.1134/S0036024417010307