Resumo

MESA, Santiago; ARBOLEDA, Johana; AMAYA, Sandra  e  ECHAVARRIA, Adriana. EFFECT OF VANADIUM IN CATALYSTS DERIVED FROM HYDROTALCITE-LIKE MATERIALS IN OXIDATIVE DEHIDROGENATION OF PROPANE. Rev.Colomb.Quim. [online]. 2011, vol.40, n.3, pp.337-348. ISSN 0120-2804.

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 °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.

Palavras-chave : Hydrotalcite; propylene; vanadium; heterogeneous catalysis.