Abstract
AbstractThe aim of this work is to synthesize Nb‐V oxide catalysts by sol gel route starting from metal alkoxides using different H2O/V ratios. Dried samples are characterized by X‐ray diffraction (XRD), atomic absorption, and Brunauer‐Emmett‐Teller (BET) analysis. Calcination of dried materials up to 600°C in flowing air has been followed with Thermogravimetry‐Fourier‐transform infrared spectroscopy (TG‐FTIR) spectroscopic analysis. The catalytic properties of calcined materials are tested in the oxidative dehydrogenation of ethane at 600°C. An improvement of the catalytic performances of vanadium for the gel prepared with the higher H2O/V ratio is found with respect to those of the supported catalyst due to the better interaction between vanadium and niobium.
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