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用于高效CO分离的基于UiO的混合基质膜

UiO-Based Mixed Matrix Membranes for Efficient CO Separations.

作者信息

Boutsika Lamprini G, Tampaxis Christos, Papadokostaki Kyriaki G, Sanopoulou Merope, Charalambopoulou Georgia, Bratsos Ioannis, Steriotis Theodore

机构信息

Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research "Demokritos", Ag. Paraskevi, Attikis, 15341, Greece.

Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Centre for Scientific Research "Demokritos", Ag. Paraskevi, Attikis, 15341, Greece.

出版信息

Chempluschem. 2025 Jul;90(7):e202500151. doi: 10.1002/cplu.202500151. Epub 2025 May 29.

DOI:10.1002/cplu.202500151
PMID:40344377
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12261053/
Abstract

Mixed matrix membranes (MMMs) containing UiO-type metal-organic frameworks (MOFs) have shown excellent potential for CO separation processes due to their unique permeability and selectivity properties. However, while the performance of MOF-based MMMs has been widely studied, the effect of structural defects and polymer-filler compatibility are not yet fully understood. In this work, the CO separation performance of Pebax MH1657-based MMMs is systematically evaluated incorporating 5-20 wt% of Zr-based MOF, including UiO-66, UiO-67, and two defect-engineered UiO-66 analogues, featuring extended linker (UiO-66_A) or cluster (UiO-66_F) vacancies. The structural, morphological, and thermal properties of the membranes are thoroughly characterized, with emphasis on correlating these features with gas transport performance. Single-gas permeation experiments (CO, CH, H) reveal that incorporating UiO nanoparticles within the matrix consistently enhanced CO permeability, reaching 145 Barrer for the 20 wt% UiO-66_F MMM, a 216.4% increase over the neat membrane. CO/CH and CO/H selectivities also improve upon increasing MOF loadings, with UiO-66_F achieving values of 25 and 18, respectively. This study provides insights for designing high-performance MMMs for CO separation applications, such as biogas upgrading and hydrogen purification.

摘要

含有UiO型金属有机框架（MOF）的混合基质膜（MMM）因其独特的渗透性和选择性，在CO分离过程中显示出优异的潜力。然而，虽然基于MOF的MMM的性能已得到广泛研究，但结构缺陷和聚合物-填料相容性的影响尚未完全了解。在这项工作中，系统评估了含5-20 wt%锆基MOF（包括UiO-66、UiO-67以及两种缺陷工程化的UiO-66类似物，其具有扩展连接体（UiO-66_A）或簇（UiO-66_F）空位）的基于Pebax MH1657的MMM的CO分离性能。对膜的结构、形态和热性能进行了全面表征，重点是将这些特征与气体传输性能相关联。单气体渗透实验（CO、CH、H）表明，在基质中掺入UiO纳米颗粒可持续提高CO渗透率，对于20 wt%的UiO-66_F MMM，CO渗透率达到145 Barrer，比纯膜提高了216.4%。随着MOF负载量的增加，CO/CH和CO/H选择性也有所提高，UiO-66_F的选择性分别达到25和18。本研究为设计用于CO分离应用（如沼气升级和氢气净化）的高性能MMM提供了见解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/83f1ff57ad0c/CPLU-90-e202500151-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/ee6d0a2566ec/CPLU-90-e202500151-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/87289f7c0df1/CPLU-90-e202500151-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/c4c2758954f0/CPLU-90-e202500151-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/5927cbbd8a3c/CPLU-90-e202500151-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/daf68ab5e40c/CPLU-90-e202500151-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/09c612e99c60/CPLU-90-e202500151-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/74b618822776/CPLU-90-e202500151-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/7076c9dd1278/CPLU-90-e202500151-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/83f1ff57ad0c/CPLU-90-e202500151-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/ee6d0a2566ec/CPLU-90-e202500151-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/87289f7c0df1/CPLU-90-e202500151-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/c4c2758954f0/CPLU-90-e202500151-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/5927cbbd8a3c/CPLU-90-e202500151-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/daf68ab5e40c/CPLU-90-e202500151-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/09c612e99c60/CPLU-90-e202500151-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/74b618822776/CPLU-90-e202500151-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/7076c9dd1278/CPLU-90-e202500151-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcb5/12261053/83f1ff57ad0c/CPLU-90-e202500151-g006.jpg

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本文引用的文献

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