Complete kinetic model for esterification reaction of lauric acid with glycerol to synthesize glycerol monolaurate  

作　　者：Han-Qiao Hu Yue Zhang Ming Fan Yong Cai Guang-Wen Chu Liang-Liang Zhang 

机构地区：[1]Research Center of the Ministry of Education for High Gravity Engineering and Technology,Beijing University of Chemical Technology,Beijing 100029,China [2]State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology,Beijing 100029,China [3]Petrochemical Research Institute,China National Petroleum Corporation,Beijing 102206,China

出　　处：《Chinese Journal of Chemical Engineering》2024年第6期211-221,共11页中国化学工程学报（英文版）

基　　金：supported by the National Research and Development Program of China(2021YFC3001100);the National Natural Science Foundation of China(22288102).

摘　　要：Glycerol monolaurate(GML)is a widely used industrial chemical with excellent emulsification and antibacterial effect.The direct esterification of glycerol with lauric acid is the main method to synthesize GML.In this work,the kinetic process of direct esterification was systematically studied using p-toluenesulfonic acid as catalyst.A complete kinetic model of consecutive esterification reaction has been established,and the kinetic equation of acid catalysis was deduced.The isomerization reactions of GML and glycerol dilaurate were investigated.It was found that the reaction was an equilibrium reaction and the reaction rate was faster than the esterification reaction.The kinetic equations of the consecutive esterification reaction were obtained by experiments as k_(1)=(276+92261Xcat)exp(-37720/RT)and k_(2)=(80+4413Xcat)exp(-32240/RT).The kinetic results are beneficial to the optimization of operating conditions and reactor design in GML production process.

关 键 词：Glycerol monolaurate p-Toluenesulfonic acid ESTERIFICATION KINETICS Mass transfer 

分 类 号：TQ225.24[化学工程—有机化工]