Effect of ethanol concentration on methane hydrate decomposition: MD simulation insights
The controllability of mining is a key factor affecting the commercial application of methane hydrates, and the addition of chemical additives can significantly accelerate the mining process. However, the effect of additive concentration on hydrate decomposition is not yet well understood. In this s...
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ftdoajarticles:oai:doaj.org/article:f5d365fc3e5d4b0d906b24ce1377241f 2023-05-15T17:11:39+02:00 Effect of ethanol concentration on methane hydrate decomposition: MD simulation insights Xiaoliang Sun Guanggang Zhou Zilong Liu Jianwei Zhu Fengzhi Guo Junqing Chen Wenhao He Ning Wang Ge Zhao Guiwu Lu 2021-07-01T00:00:00Z https://doi.org/10.1016/j.jmrt.2021.06.004 https://doaj.org/article/f5d365fc3e5d4b0d906b24ce1377241f EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2238785421005597 https://doaj.org/toc/2238-7854 2238-7854 doi:10.1016/j.jmrt.2021.06.004 https://doaj.org/article/f5d365fc3e5d4b0d906b24ce1377241f Journal of Materials Research and Technology, Vol 13, Iss , Pp 1722-1731 (2021) Methane hydrate Ethanol concentration Thermodynamics Decomposition Molecular dynamics Mining engineering. Metallurgy TN1-997 article 2021 ftdoajarticles https://doi.org/10.1016/j.jmrt.2021.06.004 2022-12-31T06:44:18Z The controllability of mining is a key factor affecting the commercial application of methane hydrates, and the addition of chemical additives can significantly accelerate the mining process. However, the effect of additive concentration on hydrate decomposition is not yet well understood. In this study, we systematically investigate the effect of ethanol concentration on the decomposition of methane hydrate under varying thermodynamic conditions using molecular dynamics (MD) simulations. To quantitatively characterize the decomposition process and mechanism of methane hydrates, the combination of angular order parameter (AOP), radial distribution function (RDF), mean square displacement (MSD), diffusion coefficients and system energy was for the first time used. The results showed that the addition of ethanol contributed to the formation of methane bubbles and accelerated the decomposition of hydrates. The mass transfer effect of ethanol molecules and the reconstruction of the hydrogen bond network of water molecules determined the stability of hydrates. From 0 to 40 mol% ethanol concentration, the hydrate decomposition increased with increasing the concentration of ethanol. Both increasing the temperature and decreasing the pressure are beneficial to the decomposition of the hydrate system. These results provide the selection of optimal ethanol concentration for the decomposition of methane hydrate and reveal its decomposition mechanism, and shed important light for the controllable production of gas hydrates. Article in Journal/Newspaper Methane hydrate Directory of Open Access Journals: DOAJ Articles Journal of Materials Research and Technology 13 1722 1731 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Methane hydrate Ethanol concentration Thermodynamics Decomposition Molecular dynamics Mining engineering. Metallurgy TN1-997 |
spellingShingle |
Methane hydrate Ethanol concentration Thermodynamics Decomposition Molecular dynamics Mining engineering. Metallurgy TN1-997 Xiaoliang Sun Guanggang Zhou Zilong Liu Jianwei Zhu Fengzhi Guo Junqing Chen Wenhao He Ning Wang Ge Zhao Guiwu Lu Effect of ethanol concentration on methane hydrate decomposition: MD simulation insights |
topic_facet |
Methane hydrate Ethanol concentration Thermodynamics Decomposition Molecular dynamics Mining engineering. Metallurgy TN1-997 |
description |
The controllability of mining is a key factor affecting the commercial application of methane hydrates, and the addition of chemical additives can significantly accelerate the mining process. However, the effect of additive concentration on hydrate decomposition is not yet well understood. In this study, we systematically investigate the effect of ethanol concentration on the decomposition of methane hydrate under varying thermodynamic conditions using molecular dynamics (MD) simulations. To quantitatively characterize the decomposition process and mechanism of methane hydrates, the combination of angular order parameter (AOP), radial distribution function (RDF), mean square displacement (MSD), diffusion coefficients and system energy was for the first time used. The results showed that the addition of ethanol contributed to the formation of methane bubbles and accelerated the decomposition of hydrates. The mass transfer effect of ethanol molecules and the reconstruction of the hydrogen bond network of water molecules determined the stability of hydrates. From 0 to 40 mol% ethanol concentration, the hydrate decomposition increased with increasing the concentration of ethanol. Both increasing the temperature and decreasing the pressure are beneficial to the decomposition of the hydrate system. These results provide the selection of optimal ethanol concentration for the decomposition of methane hydrate and reveal its decomposition mechanism, and shed important light for the controllable production of gas hydrates. |
format |
Article in Journal/Newspaper |
author |
Xiaoliang Sun Guanggang Zhou Zilong Liu Jianwei Zhu Fengzhi Guo Junqing Chen Wenhao He Ning Wang Ge Zhao Guiwu Lu |
author_facet |
Xiaoliang Sun Guanggang Zhou Zilong Liu Jianwei Zhu Fengzhi Guo Junqing Chen Wenhao He Ning Wang Ge Zhao Guiwu Lu |
author_sort |
Xiaoliang Sun |
title |
Effect of ethanol concentration on methane hydrate decomposition: MD simulation insights |
title_short |
Effect of ethanol concentration on methane hydrate decomposition: MD simulation insights |
title_full |
Effect of ethanol concentration on methane hydrate decomposition: MD simulation insights |
title_fullStr |
Effect of ethanol concentration on methane hydrate decomposition: MD simulation insights |
title_full_unstemmed |
Effect of ethanol concentration on methane hydrate decomposition: MD simulation insights |
title_sort |
effect of ethanol concentration on methane hydrate decomposition: md simulation insights |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://doi.org/10.1016/j.jmrt.2021.06.004 https://doaj.org/article/f5d365fc3e5d4b0d906b24ce1377241f |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Journal of Materials Research and Technology, Vol 13, Iss , Pp 1722-1731 (2021) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2238785421005597 https://doaj.org/toc/2238-7854 2238-7854 doi:10.1016/j.jmrt.2021.06.004 https://doaj.org/article/f5d365fc3e5d4b0d906b24ce1377241f |
op_doi |
https://doi.org/10.1016/j.jmrt.2021.06.004 |
container_title |
Journal of Materials Research and Technology |
container_volume |
13 |
container_start_page |
1722 |
op_container_end_page |
1731 |
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1766068422292013056 |