Preparation of Cyclohexanol and Cyclohexanone through Oxidation of Cyclohexane Over Cobalt Substitute for Dawson P-Mo-V as Catalyst

Synthesized Dawson P-Mo-V Cobalt Heteropolyacid Salts were characterized by FTIR,XRD and 31PNMR.Cyclohexane was oxidated to cyclohexanol and cyclohexanone under the conditions with cyclohexane as the raw material,H2O2 as the oxidant and the cobalt substitute for dawson P-Mo-V cobalt heteropolyacid salts as catalysts.The reaction conditions such as the type of catalyst,the amount of catalyst and H2O2,reaction time and temperature were investigated.Experimental results show that Co2H5P2Mo15V3O62 has the highest activity of catalysts,The conversion of cyclohexane was 88.37% and the total yield of cyclohexanol and cyclohexanone was 16.56% under the conditions of the amount of Co2H5P2Mo15V3O62catalyst 0.20 mmol,H2O2 with w(H2O2)=50% amounting to 0.2 mol,reaction time 10 h,the temperature 75 ℃.