| 第 34 卷第 4 期 |  | Vol. 34 No. 4 | | 2004 年 8 月 | Aug 2004 |
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所属栏目：其它
甲烷磺酸亚铈催化合成氯乙酸酯的研究 |
| 王敏; 姜恒; 宫红; 苏婷婷(辽宁石油化工大学石油化工学院; 辽宁抚顺) |
| 摘 要：合成了甲烷磺酸亚铈,用热重和红外对其进行表征。并以甲烷磺酸亚铈为催化剂,研究其催化氯乙酸与异丙醇酯化反应中各种地酯化率的影响。反应条件为:醇酸摩尔比1 1∶1,催化剂用量1 0%(以酸的摩尔数计),反应时间2 5h,反应温度80～85℃,环己烷2 5ml为带水剂,酯化率可达98 6%。其催化活性远远高于SnCl4·5H2O、CeCl3·7H2O等其它Lewis酸催化剂。反应后甲烷磺酸亚铈经过简单的相分离就可重复使用,用甲烷磺酸亚铈催化合成其它氯乙酸酯,酯化率均在98 0%以上。 |
| 关键词：甲烷磺酸亚铈; 氯乙酸异丙酯; 酯化反应; 催化活性 |
| 中图分类号：TQ614.33 文献标识码：A 文章编号：1009-9212(2004)04-0036-03 |
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| Study on the Catalytic Activity of Cerous Methanesulfonate in Synthesizing Chloroacetate |
| WANG Min; JIANG Heng; GONG Hong; SU Ting-ting （Institute of Petrochemical; Liaoning University of Petroleum & Chemical Technology; Fushun 113001; China） |
| Abstract：Cerous methanesulfonate, which ws used as the catalyst in the esterification of chloroacetic acid with isopropanol. was synthesized and characterized by TGA and FTIR. Various factors that affected the esterification have been investigated. Under the condition of 1.1/1 molar ratio of isopropanol to chloroacetic acid, 1.0% catalyst (molar percent of chloroacetic acid),2.5?h reaction time,temperature 80～85?℃, 2.5?ml cyclohexane as water-carrying agent,the esterification yield of isopropyl chloroacetate reaches... |
| Key words：cerous methanesulfonate; isopropyl chloroacetate; esterification; catalytic ctivity |
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收稿日期：2003-07-14
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