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|1. (WO2018141653) SYNTHESIS OF A MOVNBTE CATALYST HAVING A REDUCED SPECIFIC SURFACE AND HIGHER ACTIVITY FOR THE OXIDATIVE DEHYDROGENATION OF ETHANE TO ETHYLENE|
|Applicants:||CLARIANT PRODUKTE (DEUTSCHLAND) GMBH
TECHNISCHE UNIVERSITÄT MUENCHEN
SANCHEZ-SANCHEZ, Maria Cruz
|Title:||SYNTHESIS OF A MOVNBTE CATALYST HAVING A REDUCED SPECIFIC SURFACE AND HIGHER ACTIVITY FOR THE OXIDATIVE DEHYDROGENATION OF ETHANE TO ETHYLENE|
The invention relates to a mixed oxide material comprising the elements molybdenum, vanadium, niobium and tellurium, which, when using the Cu-Kα radiation, has diffraction reflections h, i, k and l in the XRD spectrum, said diffraction reflexes having their apex points 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), characterized in that the mixed oxide material has a pore volume of > 0.1 cm3/g. The mixed oxide material according to the invention is produced by a method comprising the steps of: a) producing a mixture of starting compounds containing molybdenum, vanadium, niobium and tellurium dioxide as a tellurium-containing starting compound as well as oxalic acid and a further oxoligand selected from the group consisting of dicarboxylic acids and diols, b) hydrothermally treating the mixture of starting compounds at a temperature of 100 to 300 °C, c) separating and drying the mixed oxide material which is contained in the suspension resulting from step b).