Self-Organized Colloids Thermodynamically Weaken the Effect of Salt on Methane Hydrate Formation
Natural gas hydrate deposits are typically rich in organic matter; they together with the host sediments play a crucial role in the nucleation and accumulation of gas hydrates, yet their potential thermodynamic effect on hydrate formation is rarely studied. In the present work, it was found that the...
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ftsmithonian:oai:figshare.com:article/15060927 2023-05-15T17:11:53+02:00 Self-Organized Colloids Thermodynamically Weaken the Effect of Salt on Methane Hydrate Formation Yanzhen Liu (3210600) Yu Feng (445691) Yang Zhao (39052) Lei Yang (102719) Hongsheng Dong (6507788) Lunxiang Zhang (6507791) Jiafei Zhao (3757111) 2021-07-27T00:00:00Z https://doi.org/10.1021/acssuschemeng.1c02179.s001 unknown https://figshare.com/articles/journal_contribution/Self-Organized_Colloids_Thermodynamically_Weaken_the_Effect_of_Salt_on_Methane_Hydrate_Formation/15060927 doi:10.1021/acssuschemeng.1c02179.s001 CC BY-NC 4.0 CC-BY-NC Biophysics Biochemistry Ecology Inorganic Chemistry Plant Biology Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified phase equilibrium conditions Self-Organized Colloids Thermodynam. low-permeability hydrate layers gas hydrate stability zone Methane Hydrate Formation Natural g. hydrate formation colloid Text Journal contribution 2021 ftsmithonian https://doi.org/10.1021/acssuschemeng.1c02179.s001 2021-12-20T05:41:16Z Natural gas hydrate deposits are typically rich in organic matter; they together with the host sediments play a crucial role in the nucleation and accumulation of gas hydrates, yet their potential thermodynamic effect on hydrate formation is rarely studied. In the present work, it was found that the deprotonated organic compounds could self-organize with the cations in the solution, forming organic colloids via coordination bonds. Elemental mapping showed that these organic colloids were filled with Ca 2+ and Na + ions as well as more concentrated organic matter surrounded by thin rings of Mg 2+ and Cl – ions. This was found to result in a concentration decrease of Ca 2+ and Na + ions in the solution with the presence of the colloids; the resulting decreased electrostatic effect of salt ions on water molecules would subsequently relieve the energy barrier of hydrate formation, showing a shift of the phase equilibrium conditions to a milder situation. This finding would be more nontrivial in low-permeability hydrate layers where mass exchange with the abundant ions in the seawater could be rather sluggish. The results could be of help in determining the local thickness and location of the gas hydrate stability zone and thereby the estimated reserves. Other Non-Article Part of Journal/Newspaper Methane hydrate Unknown |
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topic |
Biophysics Biochemistry Ecology Inorganic Chemistry Plant Biology Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified phase equilibrium conditions Self-Organized Colloids Thermodynam. low-permeability hydrate layers gas hydrate stability zone Methane Hydrate Formation Natural g. hydrate formation colloid |
spellingShingle |
Biophysics Biochemistry Ecology Inorganic Chemistry Plant Biology Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified phase equilibrium conditions Self-Organized Colloids Thermodynam. low-permeability hydrate layers gas hydrate stability zone Methane Hydrate Formation Natural g. hydrate formation colloid Yanzhen Liu (3210600) Yu Feng (445691) Yang Zhao (39052) Lei Yang (102719) Hongsheng Dong (6507788) Lunxiang Zhang (6507791) Jiafei Zhao (3757111) Self-Organized Colloids Thermodynamically Weaken the Effect of Salt on Methane Hydrate Formation |
topic_facet |
Biophysics Biochemistry Ecology Inorganic Chemistry Plant Biology Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified phase equilibrium conditions Self-Organized Colloids Thermodynam. low-permeability hydrate layers gas hydrate stability zone Methane Hydrate Formation Natural g. hydrate formation colloid |
description |
Natural gas hydrate deposits are typically rich in organic matter; they together with the host sediments play a crucial role in the nucleation and accumulation of gas hydrates, yet their potential thermodynamic effect on hydrate formation is rarely studied. In the present work, it was found that the deprotonated organic compounds could self-organize with the cations in the solution, forming organic colloids via coordination bonds. Elemental mapping showed that these organic colloids were filled with Ca 2+ and Na + ions as well as more concentrated organic matter surrounded by thin rings of Mg 2+ and Cl – ions. This was found to result in a concentration decrease of Ca 2+ and Na + ions in the solution with the presence of the colloids; the resulting decreased electrostatic effect of salt ions on water molecules would subsequently relieve the energy barrier of hydrate formation, showing a shift of the phase equilibrium conditions to a milder situation. This finding would be more nontrivial in low-permeability hydrate layers where mass exchange with the abundant ions in the seawater could be rather sluggish. The results could be of help in determining the local thickness and location of the gas hydrate stability zone and thereby the estimated reserves. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Yanzhen Liu (3210600) Yu Feng (445691) Yang Zhao (39052) Lei Yang (102719) Hongsheng Dong (6507788) Lunxiang Zhang (6507791) Jiafei Zhao (3757111) |
author_facet |
Yanzhen Liu (3210600) Yu Feng (445691) Yang Zhao (39052) Lei Yang (102719) Hongsheng Dong (6507788) Lunxiang Zhang (6507791) Jiafei Zhao (3757111) |
author_sort |
Yanzhen Liu (3210600) |
title |
Self-Organized Colloids Thermodynamically Weaken the Effect of Salt on Methane Hydrate Formation |
title_short |
Self-Organized Colloids Thermodynamically Weaken the Effect of Salt on Methane Hydrate Formation |
title_full |
Self-Organized Colloids Thermodynamically Weaken the Effect of Salt on Methane Hydrate Formation |
title_fullStr |
Self-Organized Colloids Thermodynamically Weaken the Effect of Salt on Methane Hydrate Formation |
title_full_unstemmed |
Self-Organized Colloids Thermodynamically Weaken the Effect of Salt on Methane Hydrate Formation |
title_sort |
self-organized colloids thermodynamically weaken the effect of salt on methane hydrate formation |
publishDate |
2021 |
url |
https://doi.org/10.1021/acssuschemeng.1c02179.s001 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
https://figshare.com/articles/journal_contribution/Self-Organized_Colloids_Thermodynamically_Weaken_the_Effect_of_Salt_on_Methane_Hydrate_Formation/15060927 doi:10.1021/acssuschemeng.1c02179.s001 |
op_rights |
CC BY-NC 4.0 |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.1021/acssuschemeng.1c02179.s001 |
_version_ |
1766068635386773504 |