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Small methods: Research Progress of gas transport channels constructed by different nano materials in mixed matrix membranes for CO2 separation

wallpapers News 2020-07-24

in recent years with the increase of CO2 concentration in the atmosphere the resulting "greenhouse effect" leads to global warming frequent extreme climate deterioration of the ecological environment seriously threatening the survival of life on earth. Efficient separation of CO2 is the key to achieve CO2 emission reduction energy gas purification. Membrane technology has become one of the most promising CO2 separation technologies with its advantages of low energy consumption high operational flexibility. However the CO2 separation performance of existing commercial polymer membranes is not high enough is generally limited by the trade-off between permeability selectivity.

mixed matrix membrane is a kind of membrane formed by adding nano fillers as dispersed phase to polymer continuous phase. It combines the advantages of polymer nano fillers avoids the problems that may occur when they form membrane separately. It has good mechanical properties ductility processability gas permeability. The diversity of polymer materials nano fillers also makes the mixed matrix membrane have great development space in material selection especially the addition of nano fillers with different dimensions can build a variety of CO2 transfer channels in the membrane which makes the membrane performance expected to break through the Robeson upper limit with high permeability high selectivity has a good industrial application prospect.

recently Professor Wang Zhi's research group of Tianjin University published a paper entitled "recent advances of gas transport channels constructed with different dimensional nanomaterials in mixed matrix membranes for CO2" on small methods The related work of "separation" review articles

is supported by national key R & D Program (Project No.: 2017yff0603400) National Natural Science Foundation of China (Project No.: 21436009).


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