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Effects of Surface Area, Free Volume, and Heat of Adsorption on Hydrogen Uptake in Metal−Organic Frameworks

Frost, Houston, Düren, Tina, Snurr, Randall Q.·2006·The Journal of Physical Chemistry B

Abstract

Grand canonical Monte Carlo simulations were performed to predict adsorption isotherms for hydrogen in a series of 10 isoreticular metal-organic frameworks (IRMOFs). The results show acceptable agreement with the limited experimental results from the literature. The effects of surface area, free volume, and heat of adsorption on hydrogen uptake were investigated by performing simulations over a wide range of pressures on this set of materials, which all have the same framework topology and surface chemistry but varying pore sizes. The results reveal the existence of three adsorption regimes: at low pressure (loading), hydrogen uptake correlates with the heat of adsorption; at intermediate pressure, uptake correlates with the surface area; and at the highest pressures, uptake correlates with the free volume. The accessible surface area and free volume, calculated from the crystal structures, were also used to estimate the potential of these materials to meet gravimetric and volumetric targets for hydrogen storage in IRMOFs.

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Authors
Frost, H., Düren, T., & Snurr, R. Q.
Venue
The Journal of Physical Chemistry B
Published
2006-04-22
Volume
110
Issue
19
Pages
9565-9570
ISSN
  • 1520-5207 (ISSN-L)
  • 1520-6106
OpenAlex
W1972429571
Cited by
595
References
0
FWCI
29.07
Type
journal article
Language
en
Open access
closed

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.