膜科学与技术

聚氧化乙烯气体分离膜的发展

作者：曹义鸣赵红永康国栋丁晓莉袁权

单位：中国科学院大连化学物理研究所

关键词：聚氧化乙烯；醚氧基团；溶解选择性；二氧化碳

出版年,卷(期):页码： 2011,31(3):18-22

摘要：

聚氧化乙烯 [poly(ethylene oxide), PEO] 类膜材料含有大量与CO2有很强相互作用的醚氧基团，使得它具有很高的CO2/light gases（例如：H2、N2、CH4）溶解选择性，因此带来很高的CO2/light gases选择性。介绍了具有高溶解选择性CO2气体分离膜材料的筛选，重点叙述了PEO类膜材料的发展以及目前主要的PEO类膜材料的气体分离性能。当PEO含量达到足够高时，PEO类膜材料的CO2/light gases选择性大小基本相同，而它们的CO2透气性随着膜材料链段结构的不同而有大不同。

Membrane materials of poly(ethylene oxide) (PEO) containing numbers of ether oxygen groups, which has favorable interaction with CO2, has high solubility selectivity of CO2/light gases resulting in high selectivity of CO2/light gases. The screenings of membrane materials with high solubility selectivity for separating CO2 was introduced. The development and gas separation properties of main PEO membrane materials were described emphatically. When the content of PEO reaches high enough, the PEO membrane materials have the almost closer solubility selectivity of CO2/light gases and different CO2 permeability because of the different chain structures of these membrane materials.

曹义鸣 (1962- )，男，浙江台州人，研究员，博士生导师，主要从事膜材料研究与开发、聚合物膜成膜过程及新型分离膜、膜分离过程中传质机理、膜分离应用及集成技术等方向的研究. * 通讯联系人

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