固体超强酸于多孔高硅氧纤维的负载及其在酯化中的应用  

Preparation of porous silica fibers impregnated with superacid and its application in esterification

作　　者：林金溪[1,2] 何静[2] 丁马太[2] 陈立富[2] 

机构地区：[1]厦门大学化学化工学院,福建厦门361005 [2]厦门大学材料学院特种先进材料实验室,高性能陶瓷纤维教育部重点实验室,福建厦门361005

出　　处：《功能材料》2012年第2期227-230,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51072169)

摘　　要：以溶胶浸渍法,将SO42-/ZrO2固体超强酸负载到由酸沥滤工艺制备的多孔高硅氧纤维上,并用于催化合成乙酸正丁酯。研究结果表明,该催化剂具有用量少,酯收率较高,产物易于分离等优点;而且使用寿命长,重复用于5次合成后,酯化率仍高于70%。E-glass fibers were acid-leached to prepare porous silica fibers.The fibers were impregnated with sol and heat-treated to produce SO2-4/ZrO2 solid superacid catalyst.This catalyst was used in the synthesis of n-butyl acetate.It had been found that the solid catalyst has high surface area and high activity.It is more effective than liquid superacid or nano-powder supported solid superacid.Consequently,the catalyst consumption can be reduced and the yield of esterification is improved.Moreover,this catalyst can be recovered easily by filtration.After 5 times of recovery,the catalyst can still give a good esterification yield of over 70%.

关 键 词：多孔高硅氧纤维 固体超强酸 酯化 

分 类 号：TQ342.86[化学工程—化纤工业]