嫁接型咪唑类碱性离子液体催化合成丙二醇醚  

Synthesis of Propylene Glycol Methyl Ether by Grafted Imidazole Basic Ionic Liquids

作　　者：张雪红[1] 张云霄[1] 刘树彬[1] 郧海丽[1] 杨晓辉[1] 胡瑞省[1] 陈汝芬[2] 

机构地区：[1]石家庄学院化工学院,河北石家庄050035 [2]河北师范大学化学与材料科学学院,河北石家庄050024

出　　处：《河北师范大学学报（自然科学版）》2013年第4期382-386,共5页Journal of Hebei Normal University：Natural Science

基　　金：国家自然科学基金(21077031);河北省科技厅指导计划(11215188)

摘　　要：应用超声波技术在温和条件下制得了嫁接型咪唑类碱性离子液体.应用Hammett指示剂、29 SiNMR和元素分析方法对所制备的样品进行了表征.结果表明,离子液体基团以共价键嫁接到载体二氧化硅上,阴离子不同嫁接型离子液体的碱强度不同.在甲醇和环氧丙烷合成丙二醇醚的反应中对样品的催化性能做了测试.结果表明,样品在此反应中反应物转化率均大于88%,样品表现出较好的重复使用性能.A series of grafted imidazole basic ionic liquids were prepared by ultrasonic technique under mild condition.The samples were characterized by indicator dye adsorption,29SiNMR spectra and element analysis method.The characterization results proved that the ionic liquids groups were grafted onto the inner wall of the silica gel.The basic strengths of grafted ionic liquids were different.The samples exhibited promising catalytic properties with high conversions（＆gt;88 %） and reusability,towards the synthesis of propylene glycol methyl ether from methanol and propylene oxide.

关 键 词：碱性离子液体 嫁接 超声波技术 甲醇 环氧丙烷 丙二醇醚 

分 类 号：O643.3[理学—物理化学]