系列长链烷基芳基磺酸盐的合成及性能研究

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丁伟,孟子华

（东北石油大学 化学化工学院，黑龙江 大庆163318）

摘要： 以苯、甲苯、乙苯、异丙苯和α烯烃（C20~C24）为原料，经Friedel-Crafts烷基化反应、磺化反应及中和反应等反应步骤，用有较强活性的离子液体作催化剂，最终合成了长链烷基苯、长链烷基甲苯、长链烷基乙苯和长链烷基异丙苯磺酸盐4种化合物。利用红外光谱对中间体及磺酸盐进行表征,并对磺酸盐进行界面性能与乳化性能测定。结果发现：4种磺酸盐表面活性剂的界面张力随表面活性剂浓度的增大先减小后增大，界面张力值均能达到10-2～10-3mN·m-1数量级；对于液体石蜡乳化能力，烷基异丙苯磺酸盐的乳化能力最强；在活性剂质量分数为0.3%时，4种磺酸盐的乳化能力均达到最大值。

关键词：  长链烷基芳基磺酸盐；  合成；  界面张力；  乳化性能

中图分类号：  TQ 423文献标志码：A

Synthesis and Properties of Series of Longchain Alkyl Aryl Sulfonates

DING Wei, MENG Zihua

(Chemical Engineering Department, Northeast Petroleum University, Daqing 163318， China）

Abstract: The main raw material of this article is benzene, toluene, ethyl benzene, isopropyl benzene and α-olefin (C20~C24), by Friedel-Crafts alkylation reaction, sulfonation and neutralization .The ionic liquid catalyst has strong activity. Finally it synthesizes long chain alkyl benzene sulfonate, long-chain alkyl toluene sulfonate, long-chain alkyl ethylbenzene sulfonate and long-chain alkyl isopropylbenzene sulfonate. The structures of the intermediates and sulfonates were proved by FT-IR. We determine interfacial properties and emulsifying capacities of sulfonates, along with the increase of the concentration of surfactant, the interfacial tension of 4 kinds of surfactants decreased firstly and then increased, the interfacial tension can reach 10^-2—10^-3mN·m^-1. For the liquid paraffin emulsion, the emulsifying capacity of long-chain alkyl isopropylbenzene sulfonate is bigger than others. When concentration is 0.3%, the emulsifying ability of 4 kinds of sulfonates will reach the maximum value.

Key words: longchain alkyl aryl sulfonate； synthesis； interfacial properties; emulsifying capacity

收稿日期：   20150210

基金项目： 中油大庆公司“古龙西地区储层损害机理及保护措施研究”项目（Dq1204003210js318）.

作者简介： 丁伟（1964—），男，博士生导师，教授.

文章编号：16726987（2016）04038404； DOI： 10.16351/j.16726987.2016.04.006