Highly selective oxidation of ethyl lactate to ethyl pyruvate catalysed by mesoporous vanadia-titania Academic Article uri icon

abstract

  • The direct oxidative dehydrogenation of lactates with molecular oxygen is a 'greener'alternative for producing pyruvates. Here we report a one-pot synthesis of mesoporous vanadia-titania (VTN), acting as highly efficient and recyclable catalysts for the conversion of ethyl lactate to ethyl pyruvate. These VTN materials feature high surface areas, large pore volumes and high density of isolated vanadium species, which can expose the active sites and facilitate the mass transport. Compared to homogeneous vanadium complexes and VOx/TiO2 prepared by impregnation, the meso-VTN catalysts showed superior activity, selectivity and stability in the aerobic oxidation of ethyl lactate to ethyl pyruvate. We studied also the effect of various vanadium precursors which revealed that the vanadium-induced phase transition of meso-VTN from anatase to rutile depends strongly …

publication date

  • January 9, 2018