Shallow marine gas hydrates occurring above the Sulfate-Methane-Interface (SMI) often contain
small amounts of H2S beside methane and other hydrocarbons, but the distribution of H2S in
these natural samples is not always homogeneous. To learn more about the formation of H2Scontaining
hydrates, gas hydrates with different ratios of H2S/CH4 were synthesized under
various conditions. The samples were synthesized from ice and water phases, with constant feed
gas compositions or controlled changes in feed gas compositions. It turns out that the detailed
nature of the synthetic hydrate samples depends on the method of sample preparation. The
sample prepared with gas containing small amounts of H2S (1% H2S and 99% CH4) appeared
homogeneous in composition, while that prepared in a water-H2S-CH4 system with higher H2S
contents was heterogeneous. The samples were analysed with Raman spectroscopy, and
differential scanning calorimetry (DSC).
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:BVAU.2429/1103 |
| Date | 07 1900 |
| Creators | Schicks, Judith M., Lu, Hailong, Ripmeester, John A., Ziemann, Martin |
| 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 |
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