Cu-Al-MCM-41的制备及催化合成二苯甲烷的研究  

Preparation of Cu-Al-MCM-41 for catalytic synthesis of diphenylmethane

作　　者：宁良明 凌江华 刘冬梅[1] 韩靖彬 王坤[2] NING Liang-ming;LING Jiang-hua;LIU Dong-mei;HAN Jing-bin;WANG Kun(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113001,China;PetroChina Fushun Petrochemical Company,Fushun 113013,China)

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [2]中国石油天然气股份有限公司抚顺石化公司,辽宁抚顺113013

出　　处：《现代化工》2024年第12期116-120,128,共6页Modern Chemical Industry

基　　金：国家自然科学基金项目(21978125)。

摘　　要：采用等体积浸渍法制备了Cu(5%)-Al-MCM-41分子筛催化剂,在固定床连续反应器中以苯和苯甲醇为反应物合成二苯甲烷。考察了焙烧温度和焙烧时间对Cu(5%)-Al-MCM-41催化性能的影响以及反应条件对二苯甲烷合成反应的影响。利用XRD、N_(2)吸附-脱附和NH_(3)-TPD等表征手段对制备的分子筛催化剂进行分析,结果表明,焙烧温度为550℃、焙烧时间为6 h制备的催化剂织构性质较好。苯和苯甲醇反应合成二苯甲烷适宜的反应条件为:剂油质量比为1∶3、反应压力为1 MPa、反应温度为110℃、体积空速(GHSV)为1.5 h^(-1),在此条件下苯甲醇的转化率为98.15%,二苯甲烷收率为88.45%。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,N_(2)adsorption-desorption and NH_(3)-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%.

关 键 词：苯 苯甲醇 二苯甲烷 傅克烷基化 AL-MCM-41 

分 类 号：TQ241.4[化学工程—有机化工]