Keggin型P-V-Mo-W四元杂多酸催化合成乙酸正丁酯  

Synthesis of n-butyl acetate catalyzed by Keggin-type P-V-Mo-W heteropolyacid

作　　者：尹彦冰[1] 宋瑶[1] 金洺函 

机构地区：[1]齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔161006

出　　处：《桂林理工大学学报》2014年第2期311-314,共4页Journal of Guilin University of Technology

基　　金：博士后研究人员落户黑龙江科研启动基金(2012)

摘　　要：采用正交试验设计研究了Keggin型P-V-Mo-W四元系列杂多酸H4PVMoxW11-xO40·nH2O(x=1,2,3,4)催化冰乙酸和正丁醇合成乙酸正丁酯的反应,得出最佳反应条件如下:正丁醇与冰乙酸的物质量比为1.2∶1,催化剂的用量为冰乙酸质量的0.5%,反应时间为40 min,酯化率达到88.52%。该系列杂多酸的酯化率随钨原子数的增加而提高。n-Butyl acetate was synthesized by acetic acid and n-butyl alcohol in orthogonal experimental design using the Keggin-type P-V-Mo-W heteropolyacids H4PVMoxW11-xO40 · nH2O （x = 1, 2, 3, 4） as catalysts. The optimum conditions are ： the mole ratio of n-butyl alcohol to acetic acid is 1.2：1 ; the mass ratio of catalyst to acetic acid is 0. 5%, reflux time is 40 minutes and the esterification rate reaches up to 88.52%. As the number of wolfram atom in this Keggin-type P-V-Mo-W heteropolyacids increased, the esterification rate was improved.

关 键 词：磷钒钼钨杂多酸 催化酯化 乙酸正丁酯 

分 类 号：O621.36[理学—有机化学]