六元瓜环和Keggin型杂多酸自组装及催化合成乙酸乙酯  

Synthesis of Ethyl Acetate Catalyzed by Self-assembled Hybrids Derived from Cucurbit[6]uril and Keggin-type Heteropolyacids

作　　者：曾俐玲 李晓迪 方兰 王沙 张朝 张云黔[1] ZENG Liling;LI Xiaodi;FANG Lan;WANG Sha;ZHANG Chao;ZHANG Yunqian(College of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550025

出　　处：《贵州大学学报（自然科学版）》2023年第5期29-36,共8页Journal of Guizhou University:Natural Sciences

基　　金：国家自然科学基金资助项目(22161011);贵州大学大学生SRT计划资助项目(贵大SRT字[2021]105号)。

摘　　要：杂多酸(HPAs)是一类用途广泛的多功能材料,在酯化反应中具有优异的催化剂性能。由于HPAs良好的溶解性,作为均相催化剂使用时,不易与产物分离、难以回收和重复利用。利用六元瓜环(Q[6])与Keggin型杂多酸的自组装作用,制备了系列难溶性Q[6]-HPAs催化剂。该类催化剂具有性质稳定、比表面积大、回收率高,可循环利用等特点,在乙酸乙酯(EA)合成中表现出较高的催化活性和循环利用率,具有潜在的应用前景。Heteropolyacids(HPAs)are a class of multifunctional material with excellent catalytic properties in esterification reaction.Because of their good solubility,HPAs are difficult to separate from the product and hard to recycle and reuse when used as a homogeneous catalyst.In this paper,a series of insoluble Q[6]-HPAs catalysts are prepared by self-assembly of cucurbit[6]uril(Q[6])and Keggin-type heteropolyacids,which have the characteristics of stable properties,large specific surface area,high recovery rate and recyclability.The heterogeneous Q[6]-HPAs catalysts exhibit high catalytic activity and recycling efficiency in the synthesis of ethyl acetate(EA),which have the potential application prospects.

关 键 词：) KEGGIN型杂多酸 超分子自组装 催化剂 乙酸乙酯(EA) 

分 类 号：O641.3[理学—物理化学]