RAMAN STUDY OF THE METHANE + TBME MIXED HYDRATE IN A DIAMOND ANVIL ...
It is well known that methane hydrate undergoes several phase transformations at high pressures. At room temperature and low to moderate pressure, methane and water form a stable cubic structure I (sI) hydrate that is also known as MH-I. The structure is transformed to a hexagonal phase (sH/MH-II) a...
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ftdatacite:10.14288/1.0040981 2024-04-28T08:28:20+00:00 RAMAN STUDY OF THE METHANE + TBME MIXED HYDRATE IN A DIAMOND ANVIL ... Englezos, Peter Desgreniers, Serge Ripmeester, John A. Klug, Dennis Susilo, Robin 2008 https://dx.doi.org/10.14288/1.0040981 https://doi.library.ubc.ca/10.14288/1.0040981 en eng The University of British Columbia article-journal Text ScholarlyArticle 2008 ftdatacite https://doi.org/10.14288/1.0040981 2024-04-02T09:56:51Z It is well known that methane hydrate undergoes several phase transformations at high pressures. At room temperature and low to moderate pressure, methane and water form a stable cubic structure I (sI) hydrate that is also known as MH-I. The structure is transformed to a hexagonal phase (sH/MH-II) above 1.0GPa. Another phase transformation occurs above 1.9GPa where the filled ice structure (MH-III) is stable up to 40 GPa before a new high pressure phase transition occurs. Experiments at such high pressures have to be performed in a diamond anvil cell (DAC). Our main interest, though, is to form sH methane hydrate at a lower pressure than reported in previous studies but with some methane in the large cages consequently increasing the methane content. This can be accomplished by introducing the molecules of the large hydrate forming substance (tert-butyl methyl ether/TBME) at a concentration slightly below the stoichiometric amount as suggested by molecular dynamics simulations. In this study we have ... Text Methane hydrate DataCite Metadata Store (German National Library of Science and Technology) |
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English |
description |
It is well known that methane hydrate undergoes several phase transformations at high pressures. At room temperature and low to moderate pressure, methane and water form a stable cubic structure I (sI) hydrate that is also known as MH-I. The structure is transformed to a hexagonal phase (sH/MH-II) above 1.0GPa. Another phase transformation occurs above 1.9GPa where the filled ice structure (MH-III) is stable up to 40 GPa before a new high pressure phase transition occurs. Experiments at such high pressures have to be performed in a diamond anvil cell (DAC). Our main interest, though, is to form sH methane hydrate at a lower pressure than reported in previous studies but with some methane in the large cages consequently increasing the methane content. This can be accomplished by introducing the molecules of the large hydrate forming substance (tert-butyl methyl ether/TBME) at a concentration slightly below the stoichiometric amount as suggested by molecular dynamics simulations. In this study we have ... |
format |
Text |
author |
Englezos, Peter Desgreniers, Serge Ripmeester, John A. Klug, Dennis Susilo, Robin |
spellingShingle |
Englezos, Peter Desgreniers, Serge Ripmeester, John A. Klug, Dennis Susilo, Robin RAMAN STUDY OF THE METHANE + TBME MIXED HYDRATE IN A DIAMOND ANVIL ... |
author_facet |
Englezos, Peter Desgreniers, Serge Ripmeester, John A. Klug, Dennis Susilo, Robin |
author_sort |
Englezos, Peter |
title |
RAMAN STUDY OF THE METHANE + TBME MIXED HYDRATE IN A DIAMOND ANVIL ... |
title_short |
RAMAN STUDY OF THE METHANE + TBME MIXED HYDRATE IN A DIAMOND ANVIL ... |
title_full |
RAMAN STUDY OF THE METHANE + TBME MIXED HYDRATE IN A DIAMOND ANVIL ... |
title_fullStr |
RAMAN STUDY OF THE METHANE + TBME MIXED HYDRATE IN A DIAMOND ANVIL ... |
title_full_unstemmed |
RAMAN STUDY OF THE METHANE + TBME MIXED HYDRATE IN A DIAMOND ANVIL ... |
title_sort |
raman study of the methane + tbme mixed hydrate in a diamond anvil ... |
publisher |
The University of British Columbia |
publishDate |
2008 |
url |
https://dx.doi.org/10.14288/1.0040981 https://doi.library.ubc.ca/10.14288/1.0040981 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_doi |
https://doi.org/10.14288/1.0040981 |
_version_ |
1797586909345611776 |