Antifreezes act as catalysts for methane hydrate formation from ice
Contrary to the thermodynamic inhibiting effect of methanol on methane hydrate formation from aqueous phases, hydrate forms quickly at high yield by exposing frozen water-methanol mixtures with methanol concentrations ranging from 0.6-10 wt% to methane gas at pressures from 125 bars at 253 K. Format...
Published in: | Angewandte Chemie International Edition |
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Online Access: | https://doi.org/10.1002/anie.201403638 https://nrc-publications.canada.ca/eng/view/object/?id=946fcd26-4c59-4998-b55d-0413c180e5d5 https://nrc-publications.canada.ca/fra/voir/objet/?id=946fcd26-4c59-4998-b55d-0413c180e5d5 |
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:21272664 2023-05-15T17:11:32+02:00 Antifreezes act as catalysts for methane hydrate formation from ice McLaurin, Graham Shin, Kyuchul Alavi, Saman Ripmeester, John A. 2014-09-24 text https://doi.org/10.1002/anie.201403638 https://nrc-publications.canada.ca/eng/view/object/?id=946fcd26-4c59-4998-b55d-0413c180e5d5 https://nrc-publications.canada.ca/fra/voir/objet/?id=946fcd26-4c59-4998-b55d-0413c180e5d5 eng eng Wiley issn:1433-7851 Angewandte Chemie - International Edition, Volume: 53, Issue: 39, Publication date: 2014-09-24, Pages: 10429–10433 doi:10.1002/anie.201403638 Methanol Molecular dynamics Gas uptake Methane hydrates Powder X ray diffraction Hydrates article 2014 ftnrccanada https://doi.org/10.1002/anie.201403638 2021-09-01T06:28:12Z Contrary to the thermodynamic inhibiting effect of methanol on methane hydrate formation from aqueous phases, hydrate forms quickly at high yield by exposing frozen water-methanol mixtures with methanol concentrations ranging from 0.6-10 wt% to methane gas at pressures from 125 bars at 253 K. Formation rates are some two orders of magnitude greater than those obtained for samples without methanol and conversion of ice is essentially complete. Ammonia has a similar catalytic effect when used in concentrations of 0.3-2.7 wt%. The structure I methane hydrate formed in this manner was characterized by powder X-ray diffraction and Raman spectroscopy. Steps in the possible mechanism of action of methanol were studied with molecular dynamics simulations of the Ih (0001) basal plane exposed to methanol and methane gas. Simulations show that methanol from a surface aqueous layer slowly migrates into the ice lattice. Methane gas is preferentially adsorbed into the aqueous methanol surface layer. Possible consequences of the catalytic methane hydrate formation on hydrate plug formation in gas pipelines, on large scale energy-efficient gas hydrate formation, and in planetary science are discussed. Peer reviewed: Yes NRC publication: Yes Article in Journal/Newspaper Methane hydrate National Research Council Canada: NRC Publications Archive Angewandte Chemie International Edition 53 39 10429 10433 |
institution |
Open Polar |
collection |
National Research Council Canada: NRC Publications Archive |
op_collection_id |
ftnrccanada |
language |
English |
topic |
Methanol Molecular dynamics Gas uptake Methane hydrates Powder X ray diffraction Hydrates |
spellingShingle |
Methanol Molecular dynamics Gas uptake Methane hydrates Powder X ray diffraction Hydrates McLaurin, Graham Shin, Kyuchul Alavi, Saman Ripmeester, John A. Antifreezes act as catalysts for methane hydrate formation from ice |
topic_facet |
Methanol Molecular dynamics Gas uptake Methane hydrates Powder X ray diffraction Hydrates |
description |
Contrary to the thermodynamic inhibiting effect of methanol on methane hydrate formation from aqueous phases, hydrate forms quickly at high yield by exposing frozen water-methanol mixtures with methanol concentrations ranging from 0.6-10 wt% to methane gas at pressures from 125 bars at 253 K. Formation rates are some two orders of magnitude greater than those obtained for samples without methanol and conversion of ice is essentially complete. Ammonia has a similar catalytic effect when used in concentrations of 0.3-2.7 wt%. The structure I methane hydrate formed in this manner was characterized by powder X-ray diffraction and Raman spectroscopy. Steps in the possible mechanism of action of methanol were studied with molecular dynamics simulations of the Ih (0001) basal plane exposed to methanol and methane gas. Simulations show that methanol from a surface aqueous layer slowly migrates into the ice lattice. Methane gas is preferentially adsorbed into the aqueous methanol surface layer. Possible consequences of the catalytic methane hydrate formation on hydrate plug formation in gas pipelines, on large scale energy-efficient gas hydrate formation, and in planetary science are discussed. Peer reviewed: Yes NRC publication: Yes |
format |
Article in Journal/Newspaper |
author |
McLaurin, Graham Shin, Kyuchul Alavi, Saman Ripmeester, John A. |
author_facet |
McLaurin, Graham Shin, Kyuchul Alavi, Saman Ripmeester, John A. |
author_sort |
McLaurin, Graham |
title |
Antifreezes act as catalysts for methane hydrate formation from ice |
title_short |
Antifreezes act as catalysts for methane hydrate formation from ice |
title_full |
Antifreezes act as catalysts for methane hydrate formation from ice |
title_fullStr |
Antifreezes act as catalysts for methane hydrate formation from ice |
title_full_unstemmed |
Antifreezes act as catalysts for methane hydrate formation from ice |
title_sort |
antifreezes act as catalysts for methane hydrate formation from ice |
publisher |
Wiley |
publishDate |
2014 |
url |
https://doi.org/10.1002/anie.201403638 https://nrc-publications.canada.ca/eng/view/object/?id=946fcd26-4c59-4998-b55d-0413c180e5d5 https://nrc-publications.canada.ca/fra/voir/objet/?id=946fcd26-4c59-4998-b55d-0413c180e5d5 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
issn:1433-7851 Angewandte Chemie - International Edition, Volume: 53, Issue: 39, Publication date: 2014-09-24, Pages: 10429–10433 doi:10.1002/anie.201403638 |
op_doi |
https://doi.org/10.1002/anie.201403638 |
container_title |
Angewandte Chemie International Edition |
container_volume |
53 |
container_issue |
39 |
container_start_page |
10429 |
op_container_end_page |
10433 |
_version_ |
1766068318740938752 |