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Advances in high carbon dioxide separation performance of poly(ethylene oxide)-based membranes

Journal of Energy Chemistry 2020年第7期29卷 30-52,I0002页

作者： Samaneh Bandehali Abdolreza Moghadassi Fahime Parvizian Sayed Mohsen Hosseini Takeshi Matsuura ezatollah joudaki Department of Chemical Engineering Faculty of EngineeringArak UniversityArak 38156-8-8349Iran Department of Chemical and Biological Engineering University of OttawaOttawaOntario K1N 6N5Canada

Poly(ethylene-oxide)(PEO)-based membranes have attracted much attention recently for CO2 separation because CO2 is highly soluble into PEO and shows high selectivity over other gases such as CH4 and ***,those membranes are not strong enough mechanically and highly crystalline,which hinders their broader applications for separation *** this review discussions are made,as much in detail as possible,on the strategies to improve gas separation performance of PEO-based *** of techniques such as synthesis of graft copolymers that contain PEO,cross-linking of polymers and blending with long chains polymers contributed significantly to improvement of *** of ionic liquids/nanoparticles has also been found ***,surface modification of nanoparticles has been done chemically or physically to enhance their compatibility with polymer *** a result of all such efforts,an excellent performance,i.e.,CO2 permeability up to 200 Barrer,CO2/N2 selectivity up to 200 and CO2/CH4 selectivity up to 70,could be *** method is to introduce functional groups into PEO-based polymers which boosted CO2 permeability up to 200 Barrer with CO2/CH4 selectivity between 40 and *** CO2 permeability of PEO-based membranes increases,without much change in selectivity,when the length of ethylene oxide is increased.

关键词： Membrane gas separation Molecular design Poly(ethylene oxide) CO2/CH4 separation

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