Abstract
The structure of catalysts based on vanadium oxide supported on different oxides (SiO2, γ-Al2O3, ZrO2, and TiO2) was investigated. Their catalytic properties in the selective oxidation of methanol in a temperature range of 100–250°C were studied. It was shown that the nature of the support determines the structure of the oxide forms of vanadium. The supporting of vanadium on SiO2 and γ-Al2O3 leads to the preferred formation of crystalline V2O5; the surface monomeric and polymeric forms of VO x are additionally formed on ZrO2 and TiO2. It was established that the crystalline V2O5 oxide is least active in the selective oxidation of methanol; the polymeric forms are more active than monomeric ones. The mechanism of the selective oxidation of methanol to dimethoxymethane and methyl formate on the vanadium oxide catalysts is considered.
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Original Russian Text © V.V. Kaichev, G.Ya. Popova, Yu.A. Chesalov, A.A. Saraev, T.V. Andrushkevich, V.I. Bukhtiyarov, 2016, published in Kinetika i Kataliz, 2016, Vol. 57, No. 1, pp. 84–96.
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Kaichev, V.V., Popova, G.Y., Chesalov, Y.A. et al. Active component of supported vanadium catalysts in the selective oxidation of methanol. Kinet Catal 57, 82–94 (2016). https://doi.org/10.1134/S0023158416010043
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DOI: https://doi.org/10.1134/S0023158416010043