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The preparation of SPEEK/phosphate salts membranes and application for CO2/CH4 separation

机译：SPEEK /磷酸盐盐膜的制备及其在CO2 / CH4分离中的应用

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SPEEK/phosphate salts membranes were prepared and utilized for CO2/CH4 separation. SPEEK with abundant -SO3H groups and EO groups on polymer chains would be beneficial for CO2 transport. The doped phosphate salts (NaH2PO4, Na2HPO4 and Na3PO4) with different acid-base properties increased the water content in the membrane, and water was expected to increase both the solubility and diffusivity of CO2 in the membrane. All membranes were characterized by FTIR, TGA, and XRD. The CO2 permeability and CO2/CH4 selectivity of SPEEK/Na3PO4 membranes were higher than that of SPEEK/NaH2PO4 and SPEEK/Na2HPO4 membranes. Compared to the pure SPEEK membrane, the CO2 permeability and CO2/CH4 selectivity of SPEEK/Na3PO4-10 membrane were increased by 144% and 65%, respectively. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43399.
机译：制备SPEEK /磷酸盐盐膜，并将其用于CO2 / CH4分离。在聚合物链上带有大量-SO3H和EO基团的SPEEK对于CO2的运输将是有益的。具有不同酸碱性质的掺杂磷酸盐（NaH2PO4，Na2HPO4和Na3PO4）增加了膜中的水含量，并且预期水会增加膜中CO2的溶解度和扩散性。所有膜均通过FTIR，TGA和XRD表征。 SPEEK / Na3PO4膜的CO2渗透性和CO2 / CH4选择性高于SPEEK / NaH2PO4和SPEEK / Na2HPO4膜。与纯SPEEK膜相比，SPEEK / Na3PO4-10膜的CO2渗透率和CO2 / CH4选择性分别增加了144％和65％。 （c）2016 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，133，43399。

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