Dissociation and specific heats of synthetic methane and ethane hydrates were measured under
high-pressure condition by using a heat-flow type calorimeter to understand thermodynamic
properties of gas hydrates under submarine/sublacustrine environments. Ice powder was put into
the sample cell and pressurized by methane and ethane up to 5MPa and 2MPa, respectively. After
the completion of gas hydrate formation, samples were heated from 263K to 288K at the rate of
0.01 K min-1. Large negative peaks of heat flow corresponded to the dissociation of gas hydrates
were detected in a temperature range 279-282K at a pressure of 5MPa for methane hydrate and
283-286K at 2MPa for ethane hydrate, respectively. We also obtained the specific heats of gas
hydrates in the range 264-276K for methane and 264-282K for ethane under pressure.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:BVAU.2429/2695 |
| Date | 07 1900 |
| Creators | Nakagawa, Ryo, Hachikubo, Akihiro, Shoji, Hitoshi |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | text |
| Rights | Hachikubo, Akihiro |
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