Catalytic Oxidation of Cyclohexane over Cu_2P_2O_7

Cu3(PO4)2,Cu2P2O7 and Cu5(P3O10)2 were synthesized by the precipitation method and the catalysts were characterized by XRD.The oxidation of cyclohexane by hydrogen peroxide was used as a probe reaction to investigate the influence of catalyst,solvent,oxidant,the reaction temperature and time.The results showed that Cu2P2O7,which is heterogeneous catalyst,was exhibited the highest catalytic activity,using 10 mL of acetonitrile,8 mmol of cyclohexane,0.03 g of Cu2P2O7 catalyst,3.0 mL of w(H2O2)=30% hydrogen peroxide at temperature of 65 ℃ for 10 h,the cyclohexane conversion was 54.1%,the cyclohexanol and cyclohexanone yields were 21.3% and 32.8%,respectively.