Selective oxidative dehydrogenation of ethane. Developing an orthorhombic phase in Mo-V-X (X=Nb, Te, Sb) mixed oxides

P. BOTELLA; A. DEJOZ; M.C. ABELLO; M. I. VAZQUEZ; L. ARRÚA; J. M. LOPEZ NIETO

Posnan, POLONIA

Simposio; 6th International Symposium on Group Five Elements; 2008

Mo-based mixed metal oxides have been proved to be active and selective catalysts for the oxidation of short chain alkanes [1]. In this sense, the system Mo-V-Nb undoped or doped with Sb [2], but specially mixed oxides based in Mo-V-Te(Sb)-Nb have been found very effective in the oxidative dehydrogenation (ODH) of ethane to ethylene at 320-400 ºC [3], with a maximum yield in the olefin about 75% [3a]. In this work we present a comparative study of the influence of composition and heat-treatment conditions on both the physico-chemical properties and the efficiency during the ethane ODH of catalysts based in Mo-V-X mixed oxides (X= Nb, Te, Sb).