V-MCM-41 mesoporous materials were synthesized by the hydrothermal method

and characterized by powder X-ray diffraction

ICP-AES

FTIR

diffuse reflectance UV-Vis and N2 adsorption-desorption.The results showed that a part of vanadium ions were incorporated into the MCM-41 framework and all synthesized samples exhibited a high crystallinity that increased with increasing molar ratio of V/Si in the synthesis gels.The results of cyclohexene oxidation catalyzed by V-MCM-41 indicated that its catalytic activity decreased in cyclohexene selective oxidation when the V content was larger than 1.10% due to the presence of V-O-V species.And at the same time

acetonitrile was also found to be the best solvent for the V-MCM-41 catalyzed cyclohexene oxidation with H2O2

and the optimum reaction temperature was 70℃.The reaction results showed that cyclohexene conversion and H2O2 utilization could reach 23.91%(mol) and 95.4%(mol) under the optimum reaction conditions

respectively.