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6FDA认可的共聚胺膜,包括调制的MOF-808s,用于烯/烯气体分离

Harun Kulak¹, Lore Hannes¹, Ivo F J Vankelecom¹

¹Membrane Technology Group (MTG), Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), Faculty of Bioscience Engineering, KU Leuven, Celestijnenlaan 200F, P.O. Box 2454, 3001 Leuven, Belgium.

|October 28, 2025

概括

化金属有机框架 (MOF) 通过选择性吸附C3H8.8来提高C3烯/烯分离的混合矩阵膜性能. 这增强了对工业气体净化过程至关重要的分离因子.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
分离科学分离科学

背景情况:

混合矩阵膜 (MMM) 对于气体分离至关重要.
金属有机框架 (MOFs) 提供可调节的孔隙性,以提高膜性能.
在MOF合成过程中选择调节器会影响其特性和膜集成.

研究的目的:

使用各种 () 碳酸调节器合成MOF-808.
将这些MOF纳入MMM的共聚胺 (6FDA-DAM:DABA) 矩阵中.
评估这些MMM对C2和C3烯酸/烯酸分离的性能.

主要方法:

用酸,黄油酸,三酸和七酸合成MOF-808.
通过将合成的MOF纳入6FDA-DAM:DABA聚合物矩阵来制造MMM.
使用C2H4/C2H6和C3H6/C3H8气体混合物的气体透实验.

主要成果:

所有MOF-808内置的MMM都显示了C2和C3分离的增强透性.
对于C2气体,选择性由聚合物相控制,产生与未填充膜相似的结果.
化MOF-808的加入显著改善了C3H6/C3H8分离因子 (高达13.5) 和透性 (高达42Barrer),这归因于优惠的C3H8吸附.

结论:

MOF-808的孔径大小影响了选择性,通过聚合物扩散主导C2分离.
化MOF-808通过C3H8的优先吸附增强了C3H6/C3H8的分离,作为一个扩散陷.
匹配聚合物填充剂特性对于优化MMM性能对于特定气体分离至关重要.

关键词:

在MOF-808中,我们可以使用MOF-808.气体分离器的气体分离器金属有机框架的框架.混合矩阵膜的混合矩阵膜.油/的分离方法聚胺聚胺的使用方法

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