Nghiên cứu đặc tính hóa lý của hệ oxit hỗn hợp V-Mg-O

Abstract

Vanadium – Magnesium mixed oxides used for the oxidative dehydrogenation was synthesized by impregnation method. Characterization of catalysts was determined by serial model techniques such as XRD, TPR-H₂, TPD-NH₃, FT-IR and N₂ physisorption. The result of XRD showed that V₂O₅ phase was inhibited in the V-Mg-O mixed oxides prepared with impregnation method. FT-IR spectra and TPR-H₂ profile showed the present of isolated VO₄ tetrahedral species in surface mixed oxide, which enhance catalytic activity of ODH reaction.