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首页> 外文期刊>Separation and Purification Technology >Separation cyclohexene/cyclohexane mixtures with facilitated transport membrane of poly(vinyl alcohol)-Co~(2+)
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Separation cyclohexene/cyclohexane mixtures with facilitated transport membrane of poly(vinyl alcohol)-Co~(2+)

机译：分离带有聚乙烯醇-Co〜（2+）转运膜的环己烯/环己烷混合物

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摘要

Facilitated transport membranes based on the solid polymer electrolytes of poly(vinyl alcohol)-Co~(2+) (PVA-Co~(2+)) blends were prepared.The membrane morphology was analyzed with X-ray scattering and DSC.The sorption behavior of cyclohexene,cyclohexane in the membranes were measured and the separation performance of the membrane were investigated for cyclohexene/cyclohexane mixtures.The result showed that Co~(2+) salts were highly soluble in PVA and disrupted the crystallinity of PVA.Compared with pure PVA,the cyclohexene saturated sorption capacity in the solid polymer electrolytes was improved a lot and reached 60 mg (cyclohexene)/g (dry membrane),while the cyclohexane saturated sorption capacity in the solid polymer electrolytes had little differences and was only 15mg (cyclohexane)/g (dry membrane).Permeability flux of the membrane was 150g/(m~2h) and a cyclohexene/cyclohexane separation factor was 60 when at 40 deg C and the optimal carrier content of the membrane ([Co~(2+)]/[-OH]) was 0.75 (mol/mol) and cyclohexene mass fraction in the feed was 0.5.
机译：制备了基于聚乙烯醇-Co〜（2+）（PVA-Co〜（2+））共混物的固体高分子电解质的运输膜，并通过X射线散射和DSC分析了膜的形态。测定了环己烯，环己烷在膜中的吸附行为，研究了环己烯/环己烷混合物的膜分离性能。结果表明，Co〜（2+）盐在PVA中的溶解度高，破坏了PVA的结晶性。采用纯PVA，固体高分子电解质中环己烯的饱和吸附量有较大提高，达到60 mg（环己烯）/ g（干膜），而固体高分子电解质中环己烷的饱和吸附量差异很小，仅为15mg。 （环己烷）/ g（干膜）。膜的渗透通量为150g /（m〜2h），在40摄氏度和膜的最佳载流子含量下，环己烯/环己烷的分离系数为60（[Co〜（ 2 +）] / [-OH ]）为0.75（mol / mol），进料中的环己烯质量分数为0.5。

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