膜科学与技术

磺化聚苯醚/介孔氧化硅杂化阳离子交换膜的制备及性能研究

作者：李雪云，苗继斌，夏茹，陈鹏，杨斌，曹明，苏丽芬，钱家盛

单位：安徽大学化学化工学院，安徽省绿色高分子材料重点实验室，中国，合肥 230601

关键词：介孔氧化硅；阳离子交换膜；扩散渗析

出版年,卷(期):页码： 2017,37(1):69-74

摘要：

利用溶胶-凝胶反应制备了带有氨基的介孔氧化硅，通过溶液共混的方法将其与磺化聚苯醚（SPPO）溶液混合制备出有机-无机杂化阳离子交换膜。利用NaOH/Na2WO4体系的扩散渗析回收废碱过程对膜的性能进行了测试，结果显示介孔氧化硅的引入可以在一定程度上解决膜分离过程中的“trade-off”效应：杂化膜的离子通量高于纯的SPPO膜，分离因子也保持在较高的水准。通过对传质机理的研究，我们认为介孔氧化硅的孔结构及其表面的-NH2对离子传递有重要的促进作用。

Amino-modified mesoporous silica (AMMS) was successfully prepared by using sol-gel reaction and was then blended with SPPO solution to prepare organic-inorganic hybrid membranes. The performance of the membranes were investigated in NaOH/Na2WO4 model system for alkali recovery via diffusion dialysis (DD), and the results showed that the introduction of mesoporous silica could solve the "trade-off" effect to a certain extent in the membrane separation process: the ion flux of the hybrid membrane was higher than that of the pure SPPO membrane, and the separation factor was also maintained at a higher level. After exploring the mass transfer mechanism, it was believed that the mesopores and -NH2 on the surface of mesoporous silica played an important role in ion transport.

第一作者：李雪云（1991-），女，安徽阜阳人，硕士研究生，从事有机-无机杂化膜研究，* **通讯作者，邮箱：qianjsh@ahu.edu.cn, lingxiaoyu1003@163.com,

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