NH2-MIL-53(Al) and NH2-MIL-101(Al) in sulfur-containing copolyimide mixed matrix membranes for gas separation
NH2-MIL-53(Al) and NH2-MIL-101(Al) in sulfur-containing copolyimide mixed matrix membranes for gas separation
复制标题
DOI：
10.1016/j.seppur.2013.03.034
复制
发表时间：
2013-06-25
影响因子：
8.6
通讯作者：
Staudt, Claudia
中科院分区：
文献类型：
--
作者：
Seoane, Beatriz;Tellez, Carlos;Staudt, Claudia
氨基官能化 MOF（NH2-MIL-53(Al) 或 NH2-MIL-101(Al)）用作与含硫共聚酰亚胺聚合物基质（6FDA:DSDA/4MPD:4,4'-SDA 1:1（聚合物 P1）或 6FDA/4MPD:4,4'-SDA 1:1（聚合物 P2））。测试了所获得的MMM的气体分离性能，包括H-2、CH4和CO2的渗透性。包含聚合物P1的膜表现出比包含聚合物P2的膜更好的与所用填料的相互作用，因此具有更好的分离性能，特别是对于NH 2 -MIL-101(A1)。负载 NH2-MIL-101(Al) 后，纯聚合物的性能得到改善，接近 Robeson 1991 H-2/CH4 和 CO2/CH4 上限，且具有高渗透性，例如使用 10 wt.% NH2-MIL-101(Al)@P1，H-2、CO2 和 CH4 分别为 114、71 和 1.7 Barrer。这些改进与填料的孔径、含砜DSDA的柔韧性和官能团以及聚合物的刚性有关。 (c) 2013 Elsevier B.V. 保留所有权利。
Amino functionalized MOFs (NH2-MIL-53(Al) or NH2-MIL-101(Al)) were used as dispersed phase in the fabrication of mixed matrix membranes (MMMs) with a polymer matrix of sulfur-containing copolyimides (6FDA:DSDA/4MPD:4,4'-SDA 1:1 (polymer P1) or 6FDA/4MPD:4,4'-SDA 1:1 (polymer P2)). The gas separation properties of the MMMs obtained were tested for permeation of H-2, CH4 and CO2. Membranes comprising polymer P1 showed better interaction with the fillers used than those with polymer P2, and therefore better separation properties, especially for NH2-MIL-101(Al). Upon NH2-MIL-101(Al) loading the performance of pure polymer was improved approaching the Robeson 1991 H-2/CH4 and CO2/CH4 upper bound limits with high permeabilities, e.g. 114, 71 and 1.7 Barrer for H-2, CO2 and CH4, respectively, using 10 wt.% NH2-MIL-101(Al)@P1. These improvements are related to the pore size of the filler, the flexibility and functional groups of sulfone-containing DSDA, and polymer rigidification. (c) 2013 Elsevier B.V. All rights reserved.