凹凸棒石粘土负载SO_4^(2-)-Al_2O_3及H_2SO_4催化合成氯乙酸异丙酯  

Synthesis of isopropyl chloroacetate with catalysis of activate attapulgite clay-supported SO_4^(2-)-Al_2O_3 and H2SO4

作　　者：王青宁[1] 田静[1] 申涛[1] 李澜[1] 张丽丽[1] 

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2008年第4期65-69,共5页Journal of Lanzhou University of Technology

基　　金：甘肃省攻关项目(2GSO47-A52-001-05)

摘　　要：用活性凹凸棒石粘土负载SO42--Al2O3及H2SO4催化氯乙酸和异丙醇合成氯乙酸异丙酯,通过正交实验,发现重复性较好,确定反应的最佳条件为酸醇物质的量比1∶1.8,催化剂加入量为酸量的4%,活化酸度10%,焙烧温度400℃,反应温度为回流温度,反应时间为6 h,酯化率分别达到73.5%和59.6%.通过FTIR、XRD测试,分析活性凹凸棒石粘土负载SO42--Al2O3及H2SO4的结构.Isopropyl chloroacetate was catalytically synthesized by attapulgite clay-supported SO4^2-Al2O3 and H2SO4. The optimal reaction conditions were obtained by means of orthogonal experiment as follows： acid/alcohol being 1.8, amount of catalyst-4% of acid amount, activation acidity-10%, roast temperature- 400 ℃, and reaction time-period 6 11. The esterification rate was 73. 5% and 59. 6% ,respectively. And the structure of the catalyst used was analyzed with FTIR and XRD.

关 键 词：活性凹凸棒石粘土 负载 催化 氯乙酸异丙酯 

分 类 号：TQ225.24[化学工程—有机化工]