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Reactive Epoxy Nanofiltration Membranes with Disulfide Bonds for the Separation of Multicomponent Chemical Mixtures
ACS Omega ( IF 3.7 ) Pub Date : 2018-08-30 00:00:00 , DOI: 10.1021/acsomega.8b00931 Chad M. Gilmer 1 , Ned B. Bowden 1
ACS Omega ( IF 3.7 ) Pub Date : 2018-08-30 00:00:00 , DOI: 10.1021/acsomega.8b00931 Chad M. Gilmer 1 , Ned B. Bowden 1
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This article reports the fabrication of organic solvent nanofiltration membranes containing a labile disulfide bond, which is broken by reaction with a chemical stimulus. These membranes are a new generation of smart membranes that have tailored selectivities and flux that can be altered by reacting with a chemical stimulus. The selectivity and flux of chemicals through the membranes was controlled by varying the concentration of disulfide bonds in the membrane. When the disulfide bonds were cleaved, the pores in the membrane became larger and yielded different separation properties. The membrane selectivity was changed by up to 70% and flux was increased up to 5×. The rapid change in selectivity of the membrane allowed for the separation of three-component mixtures. A three-component mixture of 33.3% m-dinitrobenzene, 33.3% triphenylmethane, and 33.3% 1,3,5-tris(diphenylamino)benzene (TDAB) was separated into three different fractions that were significantly enriched in one of the three molecules. The first fraction contained m-dinitrobenzene at 82% purity and 84% yield, the second fraction contained triphenylmethane at 67% purity and 49% yield, and the third fraction contained TDAB at 71% purity and 88% yield.
中文翻译：
具有二硫键的反应性环氧纳米过滤膜，用于分离多组分化学混合物
本文报道了含有不稳定的二硫键的有机溶剂纳米过滤膜的制备，该二硫键由于与化学刺激反应而断裂。这些膜是新一代智能膜，具有定制的选择性和通量，可以通过与化学刺激反应来改变选择性和通量。通过改变膜中二硫键的浓度来控制化学品通过膜的选择性和通量。当二硫键断裂时，膜中的孔变大并产生不同的分离特性。膜的选择性最多可改变70％，通量最多可增加5倍。膜选择性的快速变化允许分离三组分混合物。33.3％m的三组分混合物-二硝基苯，33.3％的三苯甲烷和33.3％的1,3,5-三（二苯基氨基）苯（TDAB）分为三个不同的馏分，这些馏分显着富集在三个分子之一中。第一馏分含有米-dinitrobenzene在82％的纯度和84％的产率，所述第二部分含有三苯基甲烷在67％的纯度和49％的产率，和第三级分在71％的纯度和88％的产率包含TDAB。
更新日期：2018-08-30
中文翻译：
具有二硫键的反应性环氧纳米过滤膜，用于分离多组分化学混合物
本文报道了含有不稳定的二硫键的有机溶剂纳米过滤膜的制备，该二硫键由于与化学刺激反应而断裂。这些膜是新一代智能膜，具有定制的选择性和通量，可以通过与化学刺激反应来改变选择性和通量。通过改变膜中二硫键的浓度来控制化学品通过膜的选择性和通量。当二硫键断裂时，膜中的孔变大并产生不同的分离特性。膜的选择性最多可改变70％，通量最多可增加5倍。膜选择性的快速变化允许分离三组分混合物。33.3％m的三组分混合物-二硝基苯，33.3％的三苯甲烷和33.3％的1,3,5-三（二苯基氨基）苯（TDAB）分为三个不同的馏分，这些馏分显着富集在三个分子之一中。第一馏分含有米-dinitrobenzene在82％的纯度和84％的产率，所述第二部分含有三苯基甲烷在67％的纯度和49％的产率，和第三级分在71％的纯度和88％的产率包含TDAB。
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