High performance MIL-101(Cr)@6FDA-mPD and MOF-199@6FDA-mPD mixed-matrix membranes for CO2/CH4 separation.,Dalton Transactions

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High performance MIL-101(Cr)@6FDA-mPD and MOF-199@6FDA-mPD mixed-matrix membranes for CO2/CH4 separation.
Dalton Transactions ( IF 3.5 ) Pub Date : 2020-01-21 , DOI: 10.1039/c9dt03222c
Alexander Nuhnen ₁ , Maximilian Klopotowski , Harold B Tanh Jeazet , Sara Sorribas , Beatriz Zornoza , Carlos Téllez , Joaquín Coronas , Christoph Janiak

Affiliation

Combination of the polyimide 6FDA-mPD (6FDA = 4,4'-hexafluoroisopropylidene diphthalic anhydride and mPD = m-phenylenediamine) and crystallites of the metal-organic frameworks (MOFs) MIL-101(Cr) or MOF-199 (HKUST-1, Cu-BTC) produces mixed-matrix membranes (MMMs) with excellent dispersion and compatibility of the MOF particles within the polymer matrix. Permeation tests of a binary CO2/CH4 (50/50) gas mixture showed a remarkable increase of CO2 permeabilities for MIL-101(Cr)@6FDA-mPD and significantly higher selectivities for MOF-199@6FDA-mPD. The CO2 permeability increased from 10 (neat polymer) to 50 Barrer for the 24 wt% MIL-101(Cr)@6FDA-mPD membrane (with essentially constant selectivity) due to the high pore volume of MIL-101(Cr). The CO2/CH4 selectivity increased from 54 to 89 from the neat 6FDA-mPD polymer to the 24 wt% MOF-199@6FDA-mPD membrane, apparently due to the high CO2 adsorption capacity of MOF-199.

中文翻译：

用于CO2 / CH4分离的高性能MIL-101（Cr）@ 6FDA-mPD和MOF-199 @ 6FDA-mPD混合基质膜。

聚酰亚胺6FDA-mPD（6FDA = 4,4'-六氟异亚丙基二邻苯二甲酸酐和mPD =间苯二胺）和金属有机骨架（MOF）MIL-101（Cr）或MOF-199（HKUST-1 ，Cu-BTC）生产混合基质膜（MMM），其在聚合物基质中的MOF颗粒具有出色的分散性和相容性。二元CO2 / CH4（50/50）混合气体的渗透测试显示，MIL-101（Cr）@ 6FDA-mPD的CO2渗透率显着提高，而MOF-199 @ 6FDA-mPD的选择性则明显更高。对于24 wt％MIL-101（Cr）@ 6FDA-mPD膜（具有基本恒定的选择性），CO2渗透性从10（纯聚合物）增加到50 Barrer（由于MIL-101（Cr）的孔体积大）。

更新日期：2020-02-13

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