Purification of Xe and SF<sub>6</sub> through Adaptive Contractions in a Flexible Metal–Organic Framework
Overcoming the trade-off effects between adsorption capacity, adsorption selectivity, and adsorption enthalpy of an adsorbent is very important but remains a huge challenge. Here, we report a flexible metal-organic framework (<b>FJI-H36</b>); it can selectively adsorb Xe from Xe/Kr mixtures with high adsorption capacity but very low adsorption enthalpy. Structural analyses show that such excellent adsorption performances come from the adaptive contraction of the flexible framework; pore shrinkage can enhance the interactions between adsorbed Xe and the framework and offset some of the adsorption heats. For SF<sub>6</sub>/N<sub>2</sub> mixtures, <b>FJI-H36</b> can also enhance the adsorption performance of SF<sub>6</sub> through adaptive contraction, resulting in both high adsorption selectivity and low adsorption enthalpy. This not only provides a new adsorbent for the purification of Xe/Kr/SF<sub>6</sub> but also offers a potential solution to overcome the trade-offs among adsorption capacity, adsorption selectivity, and adsorption enthalpy of a specific adsorbent.
Authors
- Zhou Wang (ORCID: https://orcid.org/0000-0001-5607-4701)
- Maochun Hong (ORCID: https://orcid.org/0000-0002-1347-6046)
- Jia Dai (ORCID: https://orcid.org/0000-0002-8930-7548)
- Qihui Chen (ORCID: https://orcid.org/0000-0001-7609-8305)
- Jindou Tian
Institutions
- Chinese Academy of Sciences (CN)
- Fujian Institute of Research on the Structure of Matter (CN)
- Fuzhou University (CN)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2025-04-03
- DOI
- https://doi.org/10.1021/acs.inorgchem.5c00985
- Citations
- 3
- Primary Topic
- Metal-Organic Frameworks: Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.61
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Fujian Province
- National Key Research and Development Program of China