It is shown for these two example materials that the Clausius–Clapeyron equation can only be used at low coverage, since hydrogen’s behaviour deviates from ideal at high pressures. The use of the virial equation for isosteric enthalpies is shown to require care, since it is highly dependent on selecting an appropriate number of parameters. A systematic study on the use of different parameters for the virial was performed and it was shown that, for the AX-21 case, the Clausius–Clapeyron seems to give better approximations to the exact isosteric enthalpies calculated using the Clapeyron equation than the virial equation with 10 variable parameters.
- isosteric enthalpies of adsorption
- hydrogen storage
- thermal management
- storage systems
- porous materials
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- Department of Chemical Engineering - Professor
- Institute for Sustainable Energy and the Environment - Director
- Centre for Sustainable and Circular Technologies (CSCT) - Co-Director
- Water Innovation and Research Centre (WIRC)
- Institute for Policy Research (IPR)
- Centre for Advanced Separations Engineering (CASE)
- EPSRC Centre for Doctoral Training in Statistical Applied Mathematics (SAMBa)
Person: Research & Teaching
Bimbo, N. (Creator), Ting, V. (Creator), Mays, T. (Data Curator), Xu, W. (Researcher) & Sharpe, J. (Researcher), University of Bath, 8 Jun 2015