电位滴定法测定碳酸亚乙烯酯反应液中游离三乙胺的含量  

Detection of triethylamine in vinylene carbonate reaction solution by potentiometric titration

作　　者：王艳[1] 赵磊[1] 徐婷 岳涛 Wang Yan;Zhao Lei;Xu Ting;Yue Tao(Shandong Chemical Industry Research Institute,Qingdao University of Science&Technology,Jinan 250014,China)

机构地区：[1]青岛科技大学山东化工研究院,济南250014

出　　处：《分析仪器》2025年第1期26-30,共5页Analytical Instrumentation

基　　金：泰山学者建设工程项目基金(ts20130918)。

摘　　要：建立了电位滴定法测定碳酸亚乙烯酯(VC)反应液中游离三乙胺含量的方法,为工艺路线优化提供数据支撑。该方法以乙酸为溶剂,用高氯酸标准溶液滴定三乙胺,用pH电极指示终点。结果表明:三乙胺盐酸盐与其他有机组分不干扰游离三乙胺的测定;样品测定重复性的RSD(n=7)小于1%;样品加标回收率范围为99.23%~100.52%。方法准确度高,操作简单,检测速度快,可有效监控碳酸亚乙烯酯的反应进程。The method was developed for providing data support for process optimization.Acetic acid(HAc)was taken as the solvent,perchloric acid was taken as standard solution for titrating free triethylamine and a nonaqueous pH glass electrode was taken as the measuring electrode.The results showed that the relative standard deviation of the repeatability results of this method was less than 1%(n=7),the recovery rate of samples was 99.23%-100.52%.The method has high precision,simple operation,and rapid detection speed.

关 键 词：碳酸亚乙烯酯反应液 三乙胺 三乙胺盐酸盐 电位滴定法 

分 类 号：O657.1[理学—分析化学] TQ225.52[理学—化学]