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首页> 外文期刊>Separation and Purification Technology >MOF-containing mixed-matrix membranes for CO2/CH4 and CO2/N2 binary gas mixture separations
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MOF-containing mixed-matrix membranes for CO2/CH4 and CO2/N2 binary gas mixture separations

机译：含MOF的混合基质膜用于CO2 / CH4和CO2 / N2二元气体混合物分离

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Both dense and asymmetric metal organic frameworks (MOFs) containing membranes were respectively prepared by solvent evaporation and phase inversion with Matrimid~R as base polymer and three different MOFs: [Cu3(BTC)2], ZIF-8 and MIL-53(Al) as filler. Incorporation of the fillers in the membranes resulted in an increase in thermal and mechanical stability of the membranes. However, the highest filler loadings (typically 40 wt%) deteriorated the properties of the membrane. An optimized priming protocol of the fillers before membrane preparation resulted in a homogeneous distribution of the MOFs, as confirmed with SEM. The possible presence of non-selective voids in the asymmetric membranes was overcome by coating a highly permeable silicone polymer layer on top of the MMMs. Dense membranes and asymmetric membranes for all the three studied MOFs showed improvement in CO2/CH4 and CO2/N2 selectivity and permeance as compared to the unfilled reference membrane.
机译：以Matrimid〜R为基础聚合物和三种不同的MOF：[Cu3（BTC）2]，ZIF-8和MIL-53（Al ）作为填充物。在膜中加入填料导致膜的热和机械稳定性增加。然而，最高的填料装载量（通常为40重量％）使膜的性能劣化。 SEM证实，在膜制备之前填料的优化底涂方案可确保MOF均匀分布。通过在MMM的顶部涂覆一层高渗透性的有机硅聚合物层，可以克服非对称膜中非选择性空隙的可能存在。与未填充的参考膜相比，所有三个研究的MOF的致密膜和不对称膜均显示出CO2 / CH4和CO2 / N2选择性和渗透率的提高。

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