芥基羟磺基甜菜碱的合成优化及应用研究

摘要

合成了芥基羟磺基甜菜碱,对反应条件进行了优化,第一步用亚硫酸氢钠：环氧氯丙烷=1.05：1,在85℃下合成3-氯-2-羟基丙磺酸钠；第二步以异丙醇水溶液为溶剂,芥基叔胺：3-氯-2-羟基丙磺酸钠=1：1在90℃下反应6 h,芥基叔胺的转化率达97%。通过红外光谱分析确定该物质的结构。用旋滴法考察了合成产物对界面张力的影响,指出该产物可能适用于二三类油藏的三次采油中。%Erucyl sulfobetaine was synthesized by 3-chloro-2-hydyoxy propanesulfate and erucyl tertiary amines. First step, the optimum reaction condition was ratio of sodium bisulfite : sodium bisulfite = 1. 05 :1 ( mole ratio), temperature 85 ℃. Second step, erucyl tertiary amines:3 -chloro-2 -hydyoxy propanesulfate = 1:1, temperature 90℃, reaction time 6 h in isopropanol aqueous solution. The conversion reached 97%. The structure was confirmed by FT-IR. The dynamic interfacial tension (IFT) had been determined via Texas 500 spinning drop tensiometer. It might be a new type of surfactant in tertiary oil recovery.