Flexible Polypropylene-Supported ZIF‑8 Membranes for Highly Efficient Propene/Propane Separation

Metal–organic framework (MOF) membranes have enormous potential in separation applications. There are several MOF membranes grown on polymer substrates aimed for scale-up, but their brittleness hampers any industrial application. Herein, intergrown continuous polypropylene (PP)-supported ZIF-8 membr...

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Published inJournal of the American Chemical Society Vol. 142; no. 50; pp. 20915 - 20919
Main Authors Zhao, Yali, Wei, Yanying, Lyu, Luxi, Hou, Qianqian, Caro, Jürgen, Wang, Haihui
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 16.12.2020
Subjects
brittleness
coordination polymers
industrial applications
polypropylenes
propane
propylene
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Summary:Metal–organic framework (MOF) membranes have enormous potential in separation applications. There are several MOF membranes grown on polymer substrates aimed for scale-up, but their brittleness hampers any industrial application. Herein, intergrown continuous polypropylene (PP)-supported ZIF-8 membranes have been successfully synthesized via fast current-driven synthesis (FCDS) within 1 h. The PP-supported ZIF-8 membranes exhibit a promising separation factor of 122 ± 13 for binary C3H6–C3H8 mixtures combined with excellent flexibility behavior. The C3H6/C3H8 separation performance of the PP-supported ZIF-8 membrane was found to be constant after bending the supported ZIF-8 film with a curvature of 92 m–1. This outstanding mechanical property is crucial for practical applications. Moreover, we further synthesized ZIF-8 membranes on various polymer substrates and even polymer hollow fibers to demonstrate the production scalability.
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ISSN:0002-7863
1520-5126
1520-5126
DOI:10.1021/jacs.0c07481