EFFECT OF VANADIUM IN CATALYSTS DERIVED FROM HYDROTALCITE-LIKE MATERIALS IN OXIDATIVE DEHIDROGENATION OF PROPANE

Two novel hydrotalcite-like materials have been synthesized by hydrothermal treatment. Using ionic exchange method, the materials have been modified with vanadium species. Characterization of the materials was carried out by X-Ray diffraction (XRD), chemical analyses (atomic absorption), and Thermogravimetric analyses (TGA). Modified and non-modified materials have been calcined in order to obtain respective mixed oxides, which were tested in oxidative dehydrogenation of propane (ODHP) at a space velocity of 50 mL/min g with a temperature range between 250-500 degrees C. The catalytic studies showed a positive effect by incorporating vanadium for NiCoCr system, while for the NiCoFe modified system a decrease in catalytic activity was shown.