Research progress on carbon dioxide membrane separation materials and their properties
Carbon capture,utilization and storage technology is an important way for the green development of energy industry.Compared with traditional processes such as chemical absorption,pressure swing adsorption,and cryogenic distillation,membrane separation has the advantages of low energy consumption,high efficiency,miniaturization,environmental-friendliness and easy integration with other technologies.At present,the selection and modification of membrane materials along with the reconstruction of membrane structure are key to improvement in their separation performance.Herein,the research progress on organic polymer membranes,inorganic membranes and mixed matrix membranes was summarized and compared.The separation mechanism,materials and properties were then introduced,especially the modification of materials and the filling materials used in mixed matrix membranes.Finally,the research directions to improve the performance of CO2 separation membrane materials and the existing challenges were discussed.
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