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Molecular Insights into the Homogeneous Melting of Methane Hydrates
Liang, Shuai; Yi, Lizhi; Liang, Deqing
2014-12-11
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
Volume118Issue:49Pages:28542-28547
AbstractAlthough the melting of gas hydrates tends to be heterogeneous in most cases, in principle, this process can also be homogeneous when surface melting is properly inhibited. In this work, we investigated the molecular mechanisms of the homogeneous melting of superheated methane hydrates by means of molecular dynamics simulations. The homogeneous melting processes were found to be stochastic with varied induction times. We observed the formation of structural defects within the hydrogen-bonded water lattices of hydrate crystals during the induction times. The methane molecules were found to be relatively more stable within the gas hydrate phases, which might be responsible for the high stability of the superheated metastable methane hydrates. Although the melting processes involve the collective motion of water and methane molecules, the current work suggests that the migration and aggregation of methane molecules are critical in initiating the homogeneous melting of gas hydrate crystals.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1021/jp511362s
WOS Subject ExtendedChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordDYNAMICS SIMULATIONS ; ANOMALOUS PRESERVATION ; ORIENTATIONAL DEFECTS ; CARBON-DIOXIDE ; DISSOCIATION ; ICE ; NUCLEATION ; CLATHRATE ; WATER ; HYDROGEN
Indexed BySCI
Language英语
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000346321700025
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10760
Collection中国科学院广州能源研究所
AffiliationChinese Acad Sci, Key Lab Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Liang, Shuai,Yi, Lizhi,Liang, Deqing. Molecular Insights into the Homogeneous Melting of Methane Hydrates[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(49):28542-28547.
APA Liang, Shuai,Yi, Lizhi,&Liang, Deqing.(2014).Molecular Insights into the Homogeneous Melting of Methane Hydrates.JOURNAL OF PHYSICAL CHEMISTRY C,118(49),28542-28547.
MLA Liang, Shuai,et al."Molecular Insights into the Homogeneous Melting of Methane Hydrates".JOURNAL OF PHYSICAL CHEMISTRY C 118.49(2014):28542-28547.
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