Dissociation studies of CH4–C2H6 and CH4–CO2 binary gas hydrates
| Autor: | Steven F. Dec, Kristen E. Bowler, Laura J. Rovetto, Laura L. Stadterman, E. Dendy Sloan, Carolyn A. Koh |
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| Rok vydání: | 2007 |
| Předmět: |
Magic angle
Chemistry business.industry General Chemical Engineering Clathrate hydrate Analytical chemistry General Physics and Astronomy Methane Dissociation (chemistry) chemistry.chemical_compound Natural gas Carbon dioxide Binary system Physical and Theoretical Chemistry business Excitation Nuclear chemistry |
| Zdroj: | Fluid Phase Equilibria. 261:407-413 |
| ISSN: | 0378-3812 |
| Popis: | The objective of this work was to enhance understanding of gas hydrate dissociation, and provide information to help evaluate gas hydrate processes, such as ocean CO 2 sequestration and CH 4 recovery from natural gas hydrates in deep sea sediments. The composition and dissociation behavior of CH 4 + C 2 H 6 and CH 4 + CO 2 structure I binary gas hydrates were determined using NMR spectral analysis. Single-pulse excitation was used in combination with magic-angle spinning (MAS). Time-resolved decomposition experiments were carried out on sealed, pressurized samples of both binary gas hydrate systems. Decomposition profiles have been obtained for each case. At the experimental conditions of this work, the gas hydrate composition did not change after the dissociation experiments. These results suggest that the unit cell decomposes as a single entity. |
| Databáze: | OpenAIRE |
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