Search for memory effects in methane hydrate: Structure of water before hydrate formation and after hydrate decomposition
Neutron diffraction with H∕D isotope substitution has been used to study the formation and decomposition of the methane clathrate hydrate. Using this atomistic technique coupled with simultaneous gas consumption measurements, we have successfully tracked the formation of the sI methane hydrate from...
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craippubl:10.1063/1.2074927 2024-06-23T07:54:37+00:00 Search for memory effects in methane hydrate: Structure of water before hydrate formation and after hydrate decomposition Buchanan, Piers Soper, Alan K. Thompson, Helen Westacott, Robin E. Creek, Jefferson L. Hobson, Greg Koh, Carolyn A. 2005 http://dx.doi.org/10.1063/1.2074927 https://pubs.aip.org/aip/jcp/article-pdf/doi/10.1063/1.2074927/15375639/164507_1_online.pdf en eng AIP Publishing The Journal of Chemical Physics volume 123, issue 16 ISSN 0021-9606 1089-7690 journal-article 2005 craippubl https://doi.org/10.1063/1.2074927 2024-06-06T04:04:25Z Neutron diffraction with H∕D isotope substitution has been used to study the formation and decomposition of the methane clathrate hydrate. Using this atomistic technique coupled with simultaneous gas consumption measurements, we have successfully tracked the formation of the sI methane hydrate from a water/gas mixture and then the subsequent decomposition of the hydrate from initiation to completion. These studies demonstrate that the application of neutron diffraction with simultaneous gas consumption measurements provides a powerful method for studying the clathrate hydrate crystal growth and decomposition. We have also used neutron diffraction to examine the water structure before the hydrate growth and after the hydrate decomposition. From the neutron-scattering curves and the empirical potential structure refinement analysis of the data, we find that there is no significant difference between the structure of water before the hydrate formation and the structure of water after the hydrate decomposition. Nor is there any significant change to the methane hydration shell. These results are discussed in the context of widely held views on the existence of memory effects after the hydrate decomposition. Article in Journal/Newspaper Methane hydrate AIP Publishing The Journal of Chemical Physics 123 16 164507 |
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English |
description |
Neutron diffraction with H∕D isotope substitution has been used to study the formation and decomposition of the methane clathrate hydrate. Using this atomistic technique coupled with simultaneous gas consumption measurements, we have successfully tracked the formation of the sI methane hydrate from a water/gas mixture and then the subsequent decomposition of the hydrate from initiation to completion. These studies demonstrate that the application of neutron diffraction with simultaneous gas consumption measurements provides a powerful method for studying the clathrate hydrate crystal growth and decomposition. We have also used neutron diffraction to examine the water structure before the hydrate growth and after the hydrate decomposition. From the neutron-scattering curves and the empirical potential structure refinement analysis of the data, we find that there is no significant difference between the structure of water before the hydrate formation and the structure of water after the hydrate decomposition. Nor is there any significant change to the methane hydration shell. These results are discussed in the context of widely held views on the existence of memory effects after the hydrate decomposition. |
format |
Article in Journal/Newspaper |
author |
Buchanan, Piers Soper, Alan K. Thompson, Helen Westacott, Robin E. Creek, Jefferson L. Hobson, Greg Koh, Carolyn A. |
spellingShingle |
Buchanan, Piers Soper, Alan K. Thompson, Helen Westacott, Robin E. Creek, Jefferson L. Hobson, Greg Koh, Carolyn A. Search for memory effects in methane hydrate: Structure of water before hydrate formation and after hydrate decomposition |
author_facet |
Buchanan, Piers Soper, Alan K. Thompson, Helen Westacott, Robin E. Creek, Jefferson L. Hobson, Greg Koh, Carolyn A. |
author_sort |
Buchanan, Piers |
title |
Search for memory effects in methane hydrate: Structure of water before hydrate formation and after hydrate decomposition |
title_short |
Search for memory effects in methane hydrate: Structure of water before hydrate formation and after hydrate decomposition |
title_full |
Search for memory effects in methane hydrate: Structure of water before hydrate formation and after hydrate decomposition |
title_fullStr |
Search for memory effects in methane hydrate: Structure of water before hydrate formation and after hydrate decomposition |
title_full_unstemmed |
Search for memory effects in methane hydrate: Structure of water before hydrate formation and after hydrate decomposition |
title_sort |
search for memory effects in methane hydrate: structure of water before hydrate formation and after hydrate decomposition |
publisher |
AIP Publishing |
publishDate |
2005 |
url |
http://dx.doi.org/10.1063/1.2074927 https://pubs.aip.org/aip/jcp/article-pdf/doi/10.1063/1.2074927/15375639/164507_1_online.pdf |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
The Journal of Chemical Physics volume 123, issue 16 ISSN 0021-9606 1089-7690 |
op_doi |
https://doi.org/10.1063/1.2074927 |
container_title |
The Journal of Chemical Physics |
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123 |
container_issue |
16 |
container_start_page |
164507 |
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1802646817840562176 |