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Cited by 184

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Adsorption and separation of hydrogen isotopes in carbon nanotubes: Multicomponent grand canonical Monte Carlo simulations

Challa, Sivakumar R., Sholl, David S., Johnson, J. Karl·2002·The Journal of Chemical Physics

Abstract

Adsorption isotherms of hydrogen isotopes from molecular simulations in carbon nanotubes and interstices are presented. The adsorption of pure isotopes follows Henry’s law up to moderate coverages. A modified path integral grand canonical Monte Carlo (PI-GCMC) technique for mixture adsorption is presented and applied to adsorption of isotope mixtures in carbon nanotubes. Adsorption isotherms of H2–T2 mixtures in nanotubes and interstices are determined at 20 and 77 K. Selectivities for T2 over H2 are calculated over a range of pressures. Selectivity in the nanotubes and interstices increases with pressure until the nanotube is saturated. Comparison of simulation results with predictions based on ideal adsorbed solution theory (IAST) shows good agreement up to moderate loadings. At higher loadings, selectivities determined from multicomponent simulations remain roughly constant, whereas IAST predicts continued increase in selectivities. Isotherms for H2–D2 and the selectivities of D2 over H2 are determined for adsorption in (10,10) nanotubes and in the interstitial channels of closed (10,10) nanotubes.

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Metadata

Authors
Challa, S. R., Sholl, D. S., & Johnson, J. K.
Venue
The Journal of Chemical Physics
Published
2002-01-08
Volume
116
Issue
2
Pages
814-824
ISSN
  • 0021-9606 (ISSN-L)
  • 1089-7690
OpenAlex
W2053164863
Cited by
184
References
3
FWCI
4.79
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Adsorption and separation of hydrogen isotopes in carbon nanotubes: Multicomponent grand canonical Monte Carlo simulations. https://app.cochat.ai/papers/10.1063/1.1423665
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Challa, S. R., Sholl, D. S., & Johnson, J. K. (2002). Adsorption and separation of hydrogen isotopes in carbon nanotubes: Multicomponent grand canonical Monte Carlo simulations. The Journal of Chemical Physics. https://doi.org/10.1063/1.1423665

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