Visible light-induced selective oxidation of cyclohexane to cyclohexanone on Cr-Si binary oxide with molecular oxygen

摘要

Cr-Si binary oxide prepared by a sol-gel method, when activated by visible light, catalyses highly selective oxidation of cyclohexane to cyclohexanone with molecular oxygen.Selective oxidation of cyclohexane to cyclohexanone is one of the most important synthetic reactions,because cyclohexanone is an important intermediate in epsilon-caprolactam synthesis,which is used in the manufacture of nylon polymers.Catalytic cyclohexanone synthesis,driven by a heterogeneous catalyst with molecular oxygen(O_2),has attracted much attention.