Phase transformation of methane hydrate under high pressure
In situ Raman spectroscopy is employed to study the phase behavior of methane hydrate at high pressure. The structure 1 of methane hydrate can be maintained up to 950 MPa at 299 K. The transformation of structure I↔structure H+water+CH4 occurs at 880 MPa and 323 K. The structure H of methane hydrate...
| Published in: | The Journal of Chemical Physics |
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| Main Authors: | , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
AIP Publishing
2004
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1063/1.1830411 https://pubs.aip.org/aip/jcp/article-pdf/doi/10.1063/1.1830411/10867383/024714_1_online.pdf |
| Summary: | In situ Raman spectroscopy is employed to study the phase behavior of methane hydrate at high pressure. The structure 1 of methane hydrate can be maintained up to 950 MPa at 299 K. The transformation of structure I↔structure H+water+CH4 occurs at 880 MPa and 323 K. The structure H of methane hydrate, however, decomposes to methane and water at 960 MPa and 348 K. The initiation mechanism of methane hydrate sI is also discussed. |
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