Exploiting the Specific Isotope-Selective Adsorption of Metal-Organic Framework for Hydrogen Isotope Separation
- Authors
- Muhammad, Raeesh; Jee, Seohyeon; Jung, Minji; Park, Jaewoo; Kang, Sung Gu; Choi, Kyung Min; Oh, Hyunchul
- Issue Date
- Jun-2021
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.143, no.22, pp 8232 - 8236
- Pages
- 5
- Journal Title
- JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
- Volume
- 143
- Number
- 22
- Start Page
- 8232
- End Page
- 8236
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/146536
- DOI
- 10.1021/jacs.1c01694
- ISSN
- 0002-7863
1520-5126
- Abstract
- Adsorptive separation using narrow-micropore adsorbents has demonstrated the potential to separate hydrogen isotopes. In this work, we employed an isotope-responsive separation using cobalt formate. A D-2-responsive third sorption step was revealed, and consequently, a noticeable difference was observed in the uptakes of D-2 and H-2. This may have resulted from the additional space created for D-2 due to its dense packing, as DFT calculations revealed that cobalt formate possesses 2.26 kJ/mol higher binding strength for D-2 than for H-2. The exploitation of this D-2-responsive third sorption step renders a promising separation performance, with a D-2/H-2 selectivity of up to 44 at 25 K/1 bar. Lastly, cobalt formate was synthesized on a gram scale here, which makes it a prospect for commercialization.
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