对甲基苯磺酸钙催化合成肉桂酸正丁酯的研究  

Study on catalytic synthesis of n-butyl cinnamate with Calcium p-toluenesulfonate

作　　者：杜晓晗[1] 

机构地区：[1]健雄职业技术学院化工系,江苏太仓215411

出　　处：《化学工程师》2010年第11期72-74,共3页Chemical Engineer

摘　　要：制备了对甲基苯磺酸钙,研究了以对甲基苯磺酸钙催化肉桂酸和正丁醇的酯化反应,考察了醇酸摩尔比、反应时间和催化剂用量对反应结果的影响,对合成的产品用折光率、元素分析和红外光谱进行了表征。实验结果表明,对甲基苯磺酸钙催化合成肉桂酸正丁酯的最佳反应条件为:醇酸摩尔比为2∶1,催化剂用量1.2%(以肉桂酸的物质的量计),反应时间120min,反应温度为回流温度。在最佳反应条件下,肉桂酸正丁酯收率在95%以上。反应结束后,催化剂通过简单的相分离即可重复使用。对甲基苯磺酸钙重复使用5次后,其催化活性无明显下降,产品收率仍可达到80%以上。Calcium p-toluenesulfonate was prepared and used as the catalyst in the esterification of cinnamic acid with butanol.The effects of alcohol / acid molar ratio,reaction time and amount of catalyst have been investigated.The products were characterized by means of refractive index,elemental analysis and FT-IR.The yield can be over 95% under the optimum conditions that molar ratio of butanol to cinnamic acid,2：1;amount of catalyst,1.2%（molar percentage of cinnamic acid）;120 minutes reaction time and reflux temperature.The catalyst can be reused by simple phase-separation after reaction.It is used repeatedly for 5 times without obvious loss of activity and with the yield still over 80.0%.

关 键 词：对甲基苯磺酸钙 肉桂酸正丁酯 酯化反应 催化活性 

分 类 号：TQ651[化学工程—精细化工]