纳米结构Pd催化剂的制备及其催化活性研究  

Synthesis and Study Activity of Nanometer Structure Pd Catalyst

作　　者：朱凤霞[1] 万颖[2] 李和兴[2] 周建峰[1] 

机构地区：[1]淮阴师范学院化学系,江苏淮安223300 [2]上海师范大学生命与环境科学学院,上海200234

出　　处：《淮阴师范学院学报（自然科学版）》2005年第1期39-42,共4页Journal of Huaiyin Teachers College;Natural Science Edition

基　　金：国家自然科学基金资助项目(20377031)

摘　　要：自制了一种新型Pd/MCM 41非均相催化剂,BET和XRD分析表明其具有长程有序的柱形中孔结构,孔道较为规整,该催化剂在碘苯偶联制备联苯的反应中表现出较高活性.添加Al进入MCM 41骨架,获得Al MCM 41,当Si∶Al的摩尔比值为60时,在14%Pd/Al MCM 41上联苯的得率为41 6%,有望替代传统Ullmann反应中的均相催化剂.The nanosacle Pd/MCM- 41 catalyst has been prepared . BET and XRD indicated that the catalyst had a highly mesoporous regular structure. The catalyst showed high catalytic activity in preparation of iodobenzene homocoupling. When Al atoms were incorporated into MCM-41 framework and Si/Al molar ratio is 60 with 14% loading of Pd, the Pd/Al-MCM-41 exhibited higher activity and better selectivity to biphenyl and the yield of biphenyl may reach 41.6%, which shows its good potential to match the homogeneous catalyst in traditional Ullmann coupling reactions.

关 键 词：清洁有机合成 介孔载体 负载型Pd催化剂 ULLMANN反应 碘苯 

分 类 号：O625.11[理学—有机化学]