大孔树脂负载金属离子催化合成环己酮缩乙二醇  

Synthesis of Ethylene Glycol Cyclohexanone Ketal Catalyzed by Big-Hole Resin Supported Ce(SO_4)_2

作　　者：田晓燕[1] 刘万毅[1] 田大年[1] 

机构地区：[1]宁夏大学化学化工学院,宁夏银川750021

出　　处：《宁夏大学学报（自然科学版）》2004年第1期57-59,62,共4页Journal of Ningxia University(Natural Science Edition)

基　　金：宁夏自然科学基金资助项目 (2 0 0 2B0 0 3);宁夏大学科研基金资助项目

摘　　要：首次研究了大孔树脂 (NKA— 9)负载Ce(SO4) 2 用于催化合成环己酮缩乙二醇 .通过正交试验 ,考查了各因素对该反应的影响 ,并得出该催化剂催化合成环己酮缩乙二醇的最佳条件为n(乙二醇 )∶n(环己酮 ) =3∶2 ,带水剂苯与反应物的体积比为 2∶5 ,催化剂用量为反应物质量的 3% ,回流反应时间为 0 .75h ,所得环己酮缩乙二醇的收率为 89.6 % .The condensation reactions of cyclohexanone with ethylene glycol by using Ce(SO_4)_2/ big-hole resin as catalyst were firstly studied. The factors of the effects on the reactions were examined. The results showed that optimum molar ratio of alcohol to ketone was 3∶2, the volume ratio of benzene as water-carrying agent to the reactants is 2∶5 and the amount of the catalyst is 3% of total weight of the reactants, and reaction mixture was refluxed for 0.75 h.The yield of ketal is 89.6%. It is found that Ce(SO_4)_2/resin is easily obtained and is an new effective catalysts for ketol reaction.

关 键 词：大孔树脂 金属离子 催化 合成 环己酮缩乙二醇 香料 

分 类 号：TQ655[化学工程—精细化工]