微波法制备HMS包络合铁配合物催化剂催化苯酚羟基化反应  

Preparation of iron complexes-encapsulated HMS catalysts by microwave irradiation method and their catalytic performance in phenol hydroxylation

作　　者：吕爱霞[1] 伏再辉[2] 唐春林[2] 刘惠平[2] 廖慧英[2] 

机构地区：[1]江门职业技术学院,广东江门529090 [2]湖南师范大学化学化工学院,湖南长沙410081

出　　处：《工业催化》2012年第5期58-63,共6页Industrial Catalysis

基　　金：国家自然科学基金(20873040)资助项目

摘　　要：以表面含氨基的HMS为载体,利用微波法在载体孔内合成8-羟基喹啉铁(FeⅡ-Oxine)、邻苯二酚铁(FeⅡ-Cat)和邻菲洛啉铁(FeⅡ-Phen)负载型催化剂(FeⅡ-L/HMS,L=Oxine,Cat或Phen),再在载体孔口接枝聚酰胺-酯型二代树状分子(A),制得FeⅡ-L/HMS-A包络合型催化剂。XRD、FT-IR、Fe含量分析和苯酚羟基化反应结果表明,铁配合物能够被有效包络合到HMS孔内,显示出较好的苯酚羟基化活性,具有良好的重复使用性能,是一种介孔分子筛固载金属配合物简便、有效和环境友好的方法。Fe^Ⅱ-Oxine, Fe^Ⅱ-Cat and Fe^Ⅱ-Phen complexes inside the pores of the amino-functionalized mesoporous silicas of HMS were synthesized in situ and encapsulated under microwave irradiation. The as-prepared heterogeneous Fen complexes catalysts were characterized by XRD, FT-IR and iron elemental analysis,and their catalytic properties in the hydroxylation of phenol with H202 were investigated. The results indicated that the microwave-assisted method was efficient and environmental-friendly, and could improve the loading of Fe^Ⅱ complexes on HMS. Furthermore, HMS-encapsulated Fe^Ⅱ complexes exhibited better catalytic activity and reusability in catalyzing the hydroxylation of phenol.

关 键 词：有机合成化学 微波法 介孔HMS 铁配合物 包络合催化剂 苯酚羟基化 

分 类 号：O643.36[理学—物理化学] O625.312[理学—化学]