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Zeolitic Imidazolate Framework Membranes: Novel Synthesis Methods and Progress Toward Industrial Use
Dennis T Lee1, Peter Corkery1, Sunghwan Park1
1Department of Chemical and Biomolecular Engineering and Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, Maryland, USA;
Annual Review of Chemical and Biomolecular Engineering
|April 13, 2022
Summary
Zeolitic imidazolate frameworks (ZIFs) show promise as selective separation membranes, particularly for propylene/propane separation. This review highlights ZIFs
Area of Science:
- Materials Science
- Chemical Engineering
- Separation Science
Background:
- Zeolitic imidazolate frameworks (ZIFs) are increasingly investigated for advanced membrane applications.
- Their unique porous structures offer potential for highly selective gas separations.
Purpose of the Study:
- To review the state-of-the-art in ZIF-based membranes for selective separations.
- To highlight ZIF structural properties enabling separations like propylene/propane.
- To assess ZIF membrane synthesis, performance, and scalability.
Main Methods:
- Review of literature on ZIF thin-film deposition and post-synthesis modification.
- Analysis of reported membrane performance data (flux and separation factors).
- Comparison of synthesis methods for scalability potential.
Main Results:
- ZIFs exhibit unique structural properties suitable for critical separations.
- Various deposition and modification techniques impact membrane performance.
- ZIF-8 membranes show specific performance for propylene/propane separation.
Conclusions:
- ZIF membranes offer significant potential for industrial gas separations.
- Further improvements in scalability, cost-effectiveness, and operational stability are crucial.
- Optimizing synthesis and post-treatment methods is key for practical application.
