In this study, a novel porous material, that is, metal‐induced polymer framework‐1 (MPF‐1) was synthesized using Zn(NO₃)₂·6H₂O and a high‐molecular weight PVAmacid. MPF‐1 has two structural advantages that help to create CO₂ separation membranes with simple fabrication procedure and high performance. First, MPF‐1 is a high‐molecular weight polymer with certain flexibility, and thus having good membrane‐forming ability. Second, MPF‐1 has small and uniform distributed pores, and contains amine groups those can react with CO₂ molecules reversibly. Therefore, CO₂ molecules can preferentially adsorb on pore walls of MPF‐1 and transport across the pores by monomolecular surface diffusion, while most of N₂, CH₄, or H₂ molecules are excluded out the pores. The MPF‐1 was employed to fabricate a microporous membrane by coating the MPF‐1 dispersions on a polysulfone ultrafiltration membrane. CO₂ permeance and selectivity of the membrane keep almost unchanged with the feed pressure increasing from 0.11 to 1.0 MPa. © 2018 American Institute of Chemical Engineers AIChE J, 65: 239–249, 2019

中文翻译：

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金属诱导的聚合物骨架膜，具有用于CO2分离的高性能

在这项研究中，使用Zn（NO ₃）₂ ·6H ₂ O和高分子量PVAmacid合成了一种新型的多孔材料，即金属诱导的聚合物骨架-1（MPF-1）。MPF-1具有两个结构优势，可帮助制造具有简单制造过程和高性能的CO ₂分离膜。首先，MPF-1是具有一定柔韧性的高分子量聚合物，因此具有良好的成膜能力。其次，MPF-1的孔分布小而均匀，并含有可与CO ₂分子可逆反应的胺基。因此，CO ₂分子可以优先吸附在MPF-1的孔壁上，并通过单分子表面扩散跨孔传输，而大多数N ₂，CH ₄或H ₂分子则被排除在孔外。通过将MPF-1分散体涂在聚砜超滤膜上，MPF-1用于制造微孔膜。随着进料压力从0.11到1.0 MPa的增加，膜的CO ₂渗透率和选择性几乎保持不变。©2018美国化学工程师学会AIChE J，65：239–249，2019