SO_4^(2-)/TiO_2-WO_3催化合成丁酮缩乙二醇  

CATALYTIC SYNTHESIS OF BUTANONE GLYCOL KETAL BY SO_4^(2-)/TiO_2-WO_3

作　　者：董镜华[1] 龚楚儒[1] 杨水金[1] 

机构地区：[1]湖北师范学院化学与环境工程系,黄石435002

出　　处：《精细石油化工》2004年第4期25-27,共3页Speciality Petrochemicals

基　　金：湖北省教育厅重点科研基金(No.2001A06006)

摘　　要：以固体超强酸SO_4^(2-)/TiO_2-WO_3为催化剂,由丁酮和乙二醇反应合成了丁酮缩乙二醇。探讨了SO_4^(2-)/TiO_2-WO_3对缩酮反应的催化活性,研究了酮醇摩尔比、催化剂用量和反应时间诸因素对产物收率的影响。结果表明:SO_4^(2-)/TiO_2-WO_3是合成丁酮缩乙二醇的良好催化剂,在n(酮):n(醇)=1:1.5,催化剂用量为反应物料总质量的0.5％,以环己烷为带水剂,反应时间1.5 h的条件下,丁酮缩乙二醇的收率可达71.8％。Butanone glycol ketal was synthesized from butanone and ethylene glycol in the presence of SO_4^(2+)/TiO_2-WO_3. The factors influencing the synthesis were investigated and the optimum conditions were found as follows, molar ratio of butanone to ethylene glycol=1: 1.5, quantity of catalyst=0.5% of feed stock, reaction temperature 80-99℃, and reaction time was 1.5 h. The yield of butanone glycol ketal is 71.8%.

关 键 词：SO4^2-/TIO2-WO3 缩乙二醇 丁酮 催化合成 催化剂用量 反应时间 固体超强酸 反应合成 催化活性 缩酮反应 产物收率 反应物料 摩尔比 总质量 带水剂 环己烷 

分 类 号：TQ655[化学工程—精细化工] TS195.21[轻工技术与工程—纺织化学与染整工程]