Synthesis of Higher Activity MoVNbTe Catalysts with Reduced Niobium and Tellurium Contents for Oxidative Dehydrogenation of Ethane

摘要

The present invention is a mixed oxide material comprising molybdenum, vanadium, niobium and tellurium elements, having diffraction reflections h, i, k and l in XRD in the presence of Cu-Kα radiation, the diffraction reflection being approximately a diffraction angle (2θ ) With peaks at 26.2 ° ± 0.5 ° (h), 27.0 ° ± 0.5 ° (i), 7.8 ° ± 0.5 ° (k) and 28.0 ° ± 0.5 ° (l), Mo ₁ V _a Nb _b Te _c O _{characterized by n} (I), where a = 0.2 to 0.35, b = greater than 0 to 0.08, c = greater than 0 to 0.08, n = an integer determined by the valence and abundance of elements other than oxygen at (I) , Mixed oxide materials.