化工学报2024，Vol.75Issue(4)：1137-1152,16.DOI:10.11949/0438-1157.20231401
聚酰亚胺膜材料分子结构设计强化CO2渗透性研究进展
Progress in molecular structure design for polyimide membrane materials to enhance CO2 permeation ability
摘要
Abstract
Membrane technology relying on the difference in gas permeation ability has been widely attempted for carbon dioxide removal from natural gases.Owing to the feature without phase change,membrane technology has remarkable advantage in energy saving.In addition,membrane plants can be manufactured under modularization layout and highly flexible to face the wide change in extraction scale for unconventional resources.Polyimide(PI)is a widely studied glassy polymer membrane material with high decarbonization selectivity and good chemical stability.In recent years,it has been industrially applied in the field of natural gas decarbonization.Even though,molecular structure design is remaining an important research direction for polyimide membrane materials to enhance carbon dioxide permeation ability and then make great savings in both investment and footprint space for membrane plants.In this review,based on the mechanism for gas permeation and separation in glassy polymeric membranes,we have summarized the research progress around aromatic polyimide membrane materials,e.g.,tailoring and customizing the isomerized backbone configuration,the steric and bulky side groups,and the locally expanded segments;meanwhile,the internal relevance about these molecular structure design issues on fractional free volume and gas permeation ability are concluded.Furthermore,a concise outlook on future research direction has also been suggested for polyimide membrane materials.Taking into account both the free volume fraction and the free volume hole size distribution range is an important way to simultaneously improve permeability and selectivity.关键词
天然气脱碳/膜分离/聚酰亚胺/分子结构/渗透性/自由体积Key words
natural gas decarbonization/membrane separation/polyimide/molecular structure/permeability/fractional free volume分类
能源科技引用本文复制引用
张子佳,仇昕月,孙翔,罗志斌,罗海中,贺高红,阮雪华..聚酰亚胺膜材料分子结构设计强化CO2渗透性研究进展[J].化工学报,2024,75(4):1137-1152,16.基金项目
国家自然科学基金项目(21978033,22021005,22378040) （21978033,22021005,22378040）
山东省自然科学基金项目(2022CXGC010303,ZR2021LFG018) （2022CXGC010303,ZR2021LFG018）
中石油创新基金项目(2021DQ02-0802) （2021DQ02-0802）
中央高校基本科研业务费专项资金项目(DUT22QN247) （DUT22QN247）
