Cu(phen)_2L/MCM-41 catalytic oxidation of cyclohexane to cyclohexanone

MCM-41 molecular sieve was prepared by hydrothermal method,and surface-functionalized by γ-aminopropyltriethoxysilane.Then,a prepared metal complex was supported on the functionalized MCM-41 to obtain the Cu(phen)2L/MCM-41(phen=o-phenanthroline,L=succinic acid) catalyst.The catalyst was characterized by XRD,BET and IR,and the results showed that the structure of the metal complex in the molecular sieve was still intact.The catalytic properties of the catalyst were investigated by the oxidation of cyclohexane to cyclohexanone with hydrogen peroxide as an oxidant.The results showed that the catalyst had high activity and stability,and under the optimized reaction conditions: acetonitrile as solvent,reaction temperature of 70oC-90oC and reaction time of 10h-12h,the cyclohexane conversion and the cyclohexanone selectivity were 33.7% and 85.3%,respectively.