| Titre : | High - pressure differential scanning calorimetry measurements of the mass transfer resistance across a methane hydrate film as a function of time and subcooling (2011) |
| Auteurs : | Simon R. Davies, Auteur ; Jason W. Lachance, Auteur ; E. Dendy Sloan, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 23, Décembre 2010) |
| Article en page(s) : | pp. 12319–12326 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Mass transfer Methane |
| Résumé : | High pressure differential scanning calorimetry was utilized to study the mass transfer rates across methane hydrate films grown at hydrocarbon−water interfaces in a quiescent system, as a function of subcooling and the age of the film. Gas hydrate films formed at such interfaces provide a substantial barrier to further gas hydrate formation. The initially high mass transfer rates across the gas hydrate films formed at gas−water interfaces confirmed that the films were porous in nature containing varying degrees of porosity, with the films requiring up to >24 h to anneal. Conversely, films formed at water−liquid hydrocarbon interfaces exhibited much lower mass transfer rates. The mass transfer rate is also dependent on the formation conditions of the film and is at a maximum at around 22 K of subcooling. This maximum appears to be independent of gas hydrate structure and pressure. |
| DEWEY : | 660 |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie1017173 |
