Production of glycerol carbonate using crude glycerol from biodiesel production with DBU as a catalyst

作     者：Ying Qing Houfang Lu Yingying Liu Changjun Liu Bin Liang Wei Jiang 

作者机构：School of Chemical Engineering Sichuan University Institute of New Energy and Low Carbon Technology Sichuan University 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2018年第26卷第9期

页      面：1912-1919页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081702[工学-化学工艺] 0817[工学-化学工程与技术] 08[工学] 0703[理学-化学] 

基　　金：Supported by the National Natural Science Foundation of China(No.21476150) 

主　　题：Glycerol DBU Glycerol carbonate Apparent kinetics 

摘      要：The biodiesel production technology catalyzed by 1,8-diazabicycloundec-7-ene（DBU）is developed in this *** glycerol containing DBU and DBU/glycerol/CO2（DGC）ionic compounds reacts directly with dimethyl carbonate（DMC）to produce high value-added glycerol carbonate（GC）catalyzed by DBU and *** catalytic performance of DBU and DGC,as well as the kinetics of the reaction catalyzed by DBU,were *** results show that DGC has a weak catalytic effect on the transesterification of glycerol and *** the temperature is higher than 60℃,DGC catalyzes the reaction jointly with DBU,which is produced from the decomposition of *** has a good catalytic effect on the reaction between glycerol and DMC,with 90%conversion of glycerol and 84%selectivity to GC under the following conditions：DMC-to-glycerol molar ratio of 3：1,4.0%DBU（based on glycerol mass）,reaction time of 60 min,and reaction temperature of 40℃.The apparent kinetics results show that the activation energies are 30.95 kJ·mol^-1 and 55.16 kJ·mol^-1 for the forward and reverse GC generation reactions,respectively,and the activation energy of the decomposition reaction of GC to glycidol（GD）is 26.58 kJ·mol^-1.