Effect of SiO2 on the physicochemical and catalytic properties of VMoTeNbО catalyst in oxidative conversion of ethane

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作者
V. M. Bondareva
E. V. Ishchenko
T. Yu. Kardash
A. V. Ishchenko
V. I. Sobolev
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[1] Russian Academy of Sciences,Boreskov Institute of Catalysis, Siberian Branch
[2] Novosibirsk State University,undefined
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Supported oxide catalysts of the overall composition V0.3Mo1Te0.23Nb0.12/n SiO2 (n = 0, 10, 25, 35, and 50 wt %) were tested in oxidative conversion of ethane to ethylene and were characterized by chemical analysis, X-ray diffraction, and high-resolution transmission electron microscopy. On introducing SiO2, coarse crystals of the active М1 phase become partially coated with layers of amorphous SiO2. The support does not influence the selectivity with respect to the reaction products. The catalysts with 10–25 wt % SiO2 content exhibit the highest activity owing to the presence of nanodomains of the M1 phase.
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页码:1279 / 1285
页数:6
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