由乳酸合成乳酸乙酯反应动力学的研究  

Study on the reactional kinetics about ethyl lactate synthesized by lactic acid

作　　者：周丽亚[1] 高静[1] 黄志红[1] 

机构地区：[1]河北工业大学化工学院,天津300130

出　　处：《化学研究与应用》2008年第12期1605-1608,共4页Chemical Research and Application

基　　金：天津市应用基础及前沿技术研究计划(08JCYBJC02400)资助项目;河北省自然科学基金(B2008000028)资助项目;河北省科学技术研究与发展计划(07215505)资助项目

摘　　要：研究了用强酸性阳离子交换树脂催化乳酸和乙醇酯化反应的动力学,通过对实验结果的分析,发现该反应正反应为二级反应,逆反应为零级反应,并由此推导出了反应动力学方程。同时还发现在温度较低时这一反应存在诱导期现象,并对这一现象进行了分析。The reactional kinetics of estefification is studied between lactic acidic and ethanol in the presence of acidic ion exchange resin catalyst. The conclusion is obtained by analyzing the experiment result, finding that the positive reaction is second order reaction, the reverse reaction is zero order reaction. The kinetic equation may be gained. The phenomenon of inducement period is also found when the temperature is lower,the phenomenon is also analysised in this work.

关 键 词：乳酸乙酯 离子交换树脂 动力学 酯化 水解 

分 类 号：TQ013.2[化学工程] TQ031.2