Cu(5％)-Al-MCM-41 molecular sieve catalyst is prepared through an equal volume impregnation method,and applied for synthesis of diphenylmethane from benzene and benzyl alcohol in a fixed bed continuous reactor.The influences of calcination temperature and time on the catalytic performance of Cu(5％)-Al-MCM-41,and reaction conditions on the synthesis of diphenylmethane are investigated.XRD,N2 adsorption-desorption and NH3-TPD are employed to analyze the prepared molecular sieve catalysts.Results show that the catalysts prepared through calcinating at 550℃ for 6 hour have good texture properties.The optimum reaction conditions for the synthesis of diphenylmethane from benzene and benzyl alcohol are as follows:the ratio of agent to oil is 1∶3,reaction pressure is 1 MPa,reaction temperature is 110℃,and GHSV is 1.5 h-1.Under these conditions,the conversion rate of benzyl alcohol is 98.15％,and the yield of diphenylmethane is 88.45％.
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