酸性离子液体催化合成N,N’-亚甲基双丙烯酰胺  

Synthesis of N,N'-methylenebisacrylamide Using Acidic Ionic Liquid as Catalyst

作　　者：项东升[1,2] 

机构地区：[1]南京林业大学化学工程学院,江苏南京210037 [2]盐城纺织职业技术学院化学工程系,江苏盐城224005

出　　处：《化工中间体》2009年第8期35-39,共5页

基　　金：江苏省林业三项工程(2007)

摘　　要：以N-甲基咪唑、2-氯乙基苯、硫酸氢钾合成1-甲基-3-[α-甲基-(4-磺酸苄基)]咪唑硫酸氢盐酸性离子液体。考察了酸性离子液体在甲醛和丙烯腈的反应中的催化性能,确定了最佳反应条件:n(甲醛)∶n(丙烯腈)=1.2∶1.0,酸性离子液体用量为丙烯腈质量的8.0%,反应温度70℃,反应时间2.0h。在该条件下N,N’-亚甲基双丙烯酰胺的收率大于92%,纯度为98%以上,且反应结束后产物易于分离,酸性离子液体循环使用5次以上。The ionic liquid of 1-methyl-3-[α-methyl-（4-sulfonatebenzyl）] imidazolium bisulfate was synthesized from N-methyl imidazole,2-Chloroethyl）benzene,potassium bisulfate. Their catalytic performances for DAAM of acetone with acrylonitrile were studied, the optimum technological conditions were n（formaldehyde）：n（acrylonitrile）=2.2：1.0, the amount of The ionic liquids was 8.0%（base on the mass of acrylonitrile） and reaction temperature 40＋2℃,reaction time 3.0 hours .under these conditions the yield of Diaceton acrylamide was over 61%, pure was up to 98% by HPLC analysis, The product was immiscible with ionic liquid and could be separated simply. The ionic liquid could be reused for more than 5 times.

关 键 词：酸性离子液体 N N’-亚甲基双丙烯酰胺 催化 合成 

分 类 号：TQ225.51[化学工程—有机化工]