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Novel low energy hydrogen–deuterium isotope breakthrough separation using a trapdoor zeolite
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Cs-chabazite, a type of zeolite with caesium counter-cations, possesses interesting gas separation properties due to a highly selective molecular “trapdoor” effect. Herein the use of this material for H2/D2 isotope separation is demonstrated. Isotope separation was achieved using breakthrough separation with a single pass through a packed bed at moderate temperatures (293 K) and pressures (0.17 MPa) when one species was in a sufficiently low concentration. The breakthrough separation curves were successfully modelled using the Thomas kinetic breakthrough model and the Yoon and Nelson kinetic breakthrough model, where working transferable kinetic rate constants were developed. Use of this material for hydrogen isotope separation would significantly lower the total energy demand compared with current hydrogen isotope separation techniques such as cryogenic distillation and is applicable to separating out low concentrations of D2 (0.0156%) present in standard grade H2.
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A D2-sensitive Cs-exchanged chabazite can separate D2 at low concentrations via trapdoor phenomena.
“Trapdoor phenomena in zeolites have been described as well, in which a D2-sensitive Cs-exchanged chabazite can separate D2 at low concentrations.260”
From Zeolites in Adsorption Processes: State of the Art and Future Prospects (2022) · cites this paper as [260]
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Discriminative Separation of Gases by a “Molecular Trapdoor” Mechanism in Chabazite Zeolites
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Sorted by citations
Zeolites in Adsorption Processes: State of the Art and Future Prospects
Pérez-Botella, E., Valencia, S., & Rey, F. (2022) · Chemical Reviews · doi:10.1021/acs.chemrev.2c00140 · Cited by 1,126
Molecular Sieves for the Separation of Hydrogen Isotopes
Perez-Carbajo, J., Parra, J. B., Ania, C. O., Merkling, P. J., & Calero, S. (2019) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.9b02736 · Cited by 56
Metadata
- Authors
- Physick, A. J. W., Wales, D. J., Owens, S. H. R., Shang, J., Webley, P. A., Mays, T. J., & Ting, V. P.
- Affiliations
- University of Bath (GB)
- The University of Melbourne (AU)
- Corresponding author
- Ting, Valeska P.
- Venue
- Chemical Engineering Journal
- Publisher
- Elsevier BV
- Published
- 2016-03
- Volume
- 288
- Pages
- 161-168
- ISSN
- 1385-8947 (ISSN-L)
- OpenAlex
- W2178493504
- Cited by
- 47
- References
- 1
- Citations by year
- 2026: 3 · 2025: 3 · 2024: 13 · 2023: 4 · 2022: 6 · 2021: 1 · 2020: 4 · 2019: 9 · 2018: 1 · 2017: 2 · 2016: 1
- FWCI
- 1.31
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Chemical Engineering Journal (publishedVersion, cc-by)
- Explore Bristol Research (publishedVersion, cc-by)
- Minerva Access (University of Melbourne) (submittedVersion)
- Funders
- Engineering and Physical Sciences Research Council (H2FC SUPERGEN EP/E040071/1)
- University of Bath
- Materials for Energy Efficiency in Transport
- European Regional Development Fund
- Australian Research Council (DP2013000024)
- Topics
- Physical Sciences › Chemical Engineering › Filtration and Separation › Membrane Separation and Gas Transport
- Physical Sciences › Chemistry › Inorganic Chemistry › Zeolite Catalysis and Synthesis
- Physical Sciences › Environmental Science › Waste Management and Disposal › Chemical Synthesis and Characterization
- Keywords
- zeolites, Thomas model, Yoon-Nelson model, rate constants
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