A method to extract potentials from the temperature dependence of Langmuir constants for clathrate-hydrates
Abstract
It is shown that the temperature dependence of Langmuir constants contains all the information needed to determine spherically averaged intermolecular potentials. An analytical “inversion” method based on the standard statistical model of van der Waals and Platteeuw is presented which extracts cell potentials directly from experimental data. The method is applied to ethane and cyclopropane clathrate-hydrates, and the resulting potentials are much simpler and more meaningful than those obtained by the usual method of numerical fitting with Kihara potentials.
- Publication:
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Physica A Statistical Mechanics and its Applications
- Pub Date:
- November 2001
- DOI:
- 10.1016/S0378-4371(01)00339-9
- arXiv:
- arXiv:physics/0011047
- Bibcode:
- 2001PhyA..300..139B
- Keywords:
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- Physics - Chemical Physics;
- Condensed Matter - Statistical Mechanics
- E-Print:
- 33 pages, 7 figures, to appear in Physica A