[Cu2(bdc)2(bpy)]n/SPES-C mixed matrix membranes for separation of methanol/methyl tert-butyl ether mixtures
[Cu2(bdc)2(bpy)]n/SPES-C mixed matrix membranes for separation of methanol/methyl tert-butyl ether mixtures
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[Cu-2(bdc)(2)(bpy)](n)/SPES-C 混合基质膜用于分离甲醇/甲基叔丁基醚混合物
DOI：
10.1016/j.memsci.2013.11.049
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发表时间：
2014-03-15
影响因子：
9.5
通讯作者：
Liu, Qing Lin
中科院分区：
文献类型：
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作者：
Han, Guang Lu;Zhou, Ke;Liu, Qing Lin
金属有机骨架材料作为一种新型的混合基质膜填料，受到了越来越多的关注。本工作成功合成了一种新型的MOFs [Cu_2（bdc）（2）（bpy）]（n），并利用扫描电子显微镜（SEM）、透射电子显微镜（TEM）、动态光散射（DLS）、广角X射线衍射（WAXRD）、热重分析（TGA）和吸附等温线对其进行了表征。[Cu_2（bdc）（2）（bpy）]（n）对甲醇的吸附能力强于对甲基叔丁基醚的吸附能力。为此，将[Cu-2（bdc）（2）（bpy）]（n）引入到磺化聚芳醚砜（SPES-C）中，制备了[Cu-2（bdc）（2）（bpy）]（n）/SPES-C MMM，用于分离甲醇/甲基叔丁基醚（MTBE）混合物。吸附选择性和扩散选择性都随着[Cu_2（bdc）（2）（bpy）]（n）的加入而增加，从而导致分离因子的增加。随着[Cu_2（bdc）（2）（bpy）]（n）负载量从5wt%增加到20wt%，通量在20wt%负载量时增加到0288 kg·m ~ 2·h。[Cu 2（bdc）（2）（bpy）]（n）负载的阈值为约20重量%，其中通量几乎保持恒定，而不管进一步增加[Cu 2（bdc）（2）（bpy）]（n）含量。该工作证明了[Cu_2（bdc）（2）（bpy）]（n）/SPES-C MMM用于分离MeOH/MTBE混合物的改进的性能。(c)© 2013 Elsevier B. V.版权所有
As a new type of filler for mixed matrix membranes (MMMs), metal-organic frameworks (MOB) have received increasing attention. As a kind of MOFs, [CU2(bdc)(2)(bpy)](n), is successfully synthesized in this work and characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), dynamic light scattering (DLS), wide angle X-ray diffraction (WAXRD), thermogravimetric analysis (TGA) and adsorption isotherms. [CU2(bdc)(2)(bpy)](n), is found to preferentially adsorb methanol (MeOH) over methyl ter-butyl ether (MTBE). For this reason, the [Cu-2(bdc)(2)(bpy)](n) is incorporated into sulfonatecl polyarylethersulfone with cardo (SPES-C) to form [CU2(bdc)(2)(bpy)](n)/SPES-C MMMs for the separation of MeOH/MTBE mixtures. Both the sorption selectivity and the diffusion selectivity are found to increase with the addition of [CU2(bdc)(2)(bpy)](n) leading to an increase in the separation factor. With increasing [CU2(bdc)(2)(bpy)](n) loading from 5 to 20 wt%, the flux increased up to 0288 kg m 2 h at 20 wt% loading. A threshold of [CU2(bdc)(2)(bpy)](n) loading is approximately 20 wt% where the flux remains almost constant regardless of further increasing the [CU2(bdc)(2)(bpy)](n), content. This work demonstrates an improved performance of the [CU2(bdc)(2)(bpy)](n)/SPES-C MMMs for the separation of MeOH/MTBE mixtures. (c) 2013 Elsevier B.V. All rights reserved