TiSiW_(12)O_(40)/TiO_2催化合成氯乙酸异辛酯  

Synthesis of 2 - Ethylhexyl Chloroacetate Catalyzed by

作　　者：梁永光[1] 刘任中[1] 杨水金[1] 陆江林[1] 郑静[1] 鲁宇安 

机构地区：[1]湖北师范学院化学与环境工程系,黄石435002 [2]湖北省潜江市益丰化工有限责任公司,潜江433102

出　　处：《精细石油化工进展》2002年第6期22-24,28,共4页Advances in Fine Petrochemicals

摘　　要：首次以固载杂多酸盐TiSiW_(12)O_(40)/TiO_2为多相催化剂,氯乙酸与异辛醇反应合成了氯乙酸异辛酯。探讨了醇酸物质的量比、催化剂用量及反应时间等因素对酯收率的影响。实验结果表明:TiSiW_(12)O_(40)/TiO_2具有良好的催化活性。在醇酸物质的量比为1.5:1、催化剂用量为反应物料总量的1.0％、反应时间1.0 h、反应温度130～152℃的条件下,氯乙酸异辛酯的收率可达83.8％。2 - Ethylhexyl chloroacetate was synthesized from chloroacetic acid with 2 - ethylhexanol using TiSiW12O40/TiO2 as heterogeneous catalyst for the first time. The effects of factors such as molar ratio of 2 - ethylhexanol to chloroacetic acid, amount of catalyst, and reaction time on the yield of 2 - ethylhexyl chloroacetate were discussed. The results showed that TiSiW12 O40/TiO2 was an excellent catalyst for synthesizing 2 - ethylhexyl chloroacetate. The yield of 2 - ethylhexyl chloroacetate could reach 83.8 % when molar ratio of 2 - ethylhexanol to chloroacetic acid was 1.5:1, amount of catalyst was 1.0 % (based on total amount of reaction mass), reaction temperature was 130 - 152 ℃, and the reaction time was 1.0 h.

关 键 词：催化合成 固载杂多酸催化剂 TISIW12O40/TIO2 氯乙酸异辛酯 酯化反应 二氧化钛 

分 类 号：O643.3[理学—物理化学]