SYNTHESIS OF A MOVTENB CATALYST FROM LOW-COST METAL OXIDES

摘要

The invention relates to a method for producing a mixed oxide material, comprising the steps of: a) producing a mixture of starting compounds containing molybdenum, vanadium, niobium and tellurium-containing starting compounds as well as two chelating oxoligands, b) hydrothermally treating the mixture of starting compounds at a temperature of 100 °C to 300 °C to obtain a product suspension, c) separating and drying the solid which is contained in the product suspension resulting from step b), d) activating the solid obtained in step c) in inert gas. The invention also relates to a mixed oxide material for the oxidation of ethane, comprising the elements molybdenum, vanadium, niobium and tellurium, having the following stoichiometry: Mo₁V_aNb_bTe_cO_x with 0.27 a 0.31; 0.08 b 0.12; 0.08 c 0.12, which, when using the Cu-Kα radiation, has in the XRD spectrum diffraction reflections h, i, k and l, whose apex points are approximately at the diffraction angles (2•) 26.2° ± 0.5° (h), 27.0° ± 0.5° (i), 7.8° ± 0.5° (k) and 28.0° ± 0.5° (l), which can be produced according to the inventive method.