聚酰亚胺基CO_2分离膜的研究进展

Progress of polyimide-based membranes for CO_2 separation

聚酰亚胺膜在气体分离中表现出优良的特性,然而渗透性和选择性之间的相互制约影响了其工业应用。以分离捕集烟道气中CO2为背景,综述了近年来改善聚酰亚胺膜对CO2/N2体系分离性能的研究现状。重点介绍了分子水平设计和杂化改性聚酰亚胺的最新研究进展,展望了聚酰亚胺杂化的关键科学问题。

Polyimide membranes showed excellent properties in gas separation. However,the inherent trade-off be- tween permeability and selectivity restricted the industrial applications. To separate and capture CO2 from flue gas, the re- cent research progress on improvement in the separation properties of membranes for CO2/N2 system was summarized. Lat- est development focusing on design and hybrid modification of polyimide structure at molecular level was introduced. In addition,key scientific issues needed to be solved about hybrid modification of polyimide were predicted and suggested.