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  

Preparation and properties of sulfonated poly(2,6-dimethyl-1,4-phenyleneoxide)/mesoporous silica hybrid cation exchange membranes

作　　者：李雪云[1] 苗继斌[1] 夏茹[1] 陈鹏[1] 杨斌[1] 曹明[1] 苏丽芬[1] 钱家盛[1] 

机构地区：[1]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,安徽省高性能橡胶材料与制品(非轮胎)产业共性技术研究院,合肥230601

出　　处：《膜科学与技术》2017年第1期69-74,共6页Membrane Science and Technology

基　　金：国家自然科学基金(51273001,21606001);安徽大学博士科研启动基金

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SPPO膜的离子通量,分离因子也保持在较高的水平.通过对传质机理的研究,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 was 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 alsomaintained at a higher level. Af te r exploring the mass transfer mechanism,it was believed that the mesopores and -NH 2 on the surface of mesoporous silica played an important role in ion transport.

关 键 词：介孔氧化硅 阳离子交换膜 扩散渗析 

分 类 号：TQ425.236[化学工程]