| DOI | Trouver le DOI : https://doi.org/10.1063/1.2710261 |
|---|
| Auteur | Rechercher : Alavi, Saman1; Rechercher : Ripmeester, J. A.1; Rechercher : Klug, D. D.1 |
|---|
| Affiliation | - Conseil national de recherches du Canada. Institut Steacie des sciences moléculaires du CNRC
|
|---|
| Format | Texte, Article |
|---|
| Sujet | free energy; Lennard-Jones potential; molecular configurations; molecular dynamics method; organic compounds |
|---|
| Résumé | Molecular dynamics simulations are used to study the stability of structure H (sH) methane clathrate hydrates in a 3 X 3 X 3 sH unit cell replica. Simulations are performed at experimental conditions of 300K and 2GPa for three methane intermolecular potentials. The five small cages of the sH unit cell are assigned methane guest occupancies of one and large cage guest occupancies of one to five are considered. Radial distribution functions, unit cell volumes, and configurational energies are studied as a function of large cage CH4 occupancy. Free energy calculations are carried out to determine the stability of clathrates for large cage occupancies. Large cage occupancy of five is the most stable configuration for a Lennard-Jones united-atom potential and the Tse-Klein-McDonald potential parametrized for condensed methane phases and two for the most stable configuation for the Murad and Gubbins potential. |
|---|
| Date de publication | 2007-03-28 |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Numéro NPARC | 12328663 |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | de426825-0d5f-46cb-a294-743b7157d489 |
|---|
| Enregistrement créé | 2009-09-10 |
|---|
| Enregistrement modifié | 2020-05-10 |
|---|
