One-pot synthesis of VOx /Al2O3 as efficient catalysts for propane dehydrogenation

Abstract

Vanadium oxides, as highly efficiently catalysts, are widely applied in various catalytic reactions, such asthe dehydrogenation of light alkanes and epoxidation of alkenes. In this paper, a series of VOx /Al 2 O3 catalysts werefabricated by the 1-pot method for catalytic propane dehydrogenation. The results indicated that the VOx /Al 2 O3catalysts with loading of 10 wt.% vanadium exhibited optimized catalytic performance. The as-prepared catalystswere characterized by N2 adsorption-desorption, XRD, TEM, H2 -TPR, and XPS to explore the texture properties,morphology, and electronic environment of vanadium. In addition, several vanadium catalysts were also prepared bythe incipient wetness impregnation (IWI) method to compare their catalytic performance with the 1-pot synthesizedcatalysts. The catalysts synthesized by the 1-pot method exhibited higher selectivity of propylene and longer catalystlifetime at high propane conversion when compared to the counterpart synthesized by the IWI method.