Synthesis of MoVTeNb Catalysts from Low-Cost Metal Oxides

摘要

The present invention provides a process for preparing a mixed oxide material, comprising the steps of: a) preparing a mixture of starting compounds containing molybdenum, vanadium, niobium and tellurium and also two chelate oxo ligands, b) said starting compound Hydrothermally treating the mixture of these at a temperature between 100 ° C. and 300 ° C. to provide a product suspension, c) isolating and drying the solids present in the product suspension produced in step b), d) obtained in step c). Activating said solids in an inert gas. The present invention is also a mixed oxide material for the oxidation of ethane, which may be prepared by the process according to the invention, comprising elements of molybdenum, vanadium, niobium and tellurium and having stoichiometric Mo ₁ V _a Nb _b Te _c O _x ( Where 0.27 a 0.31; 0.08 b 0.12; 0.08 c 0.12), and have diffraction reflections h, i, k, and l in XRD using Cu-Kα radiation, the peak of which is approximately the diffraction angle ( 2θ) to a mixed oxide material at 26.2 ° ± 0.5 ° (h), 27.0 ° ± 0.5 ° (i), 7.8 ° ± 0.5 ° (k) and 28.0 ° ± 0.5 ° (l).