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Molecular dynamics simulation of the intercalation behaviors of methane hydrate in montmorillonite
Yan, KeFeng1,2; Li, XiaoSen1,2; Xu, ChunGang1,2; Lv, QiuNan1,2; Ruan, XuKe1,2
2014-06-01
Source PublicationJOURNAL OF MOLECULAR MODELING
Volume20Issue:6
AbstractThe formation and mechanism of CH4 hydrate intercalated in montmorillonite are investigated by molecular dynamics (MD) simulation. The formation process of CH4 hydrate in montmorillonite with 1 similar to 8 H2O layers is observed. In the montmorillonite, the "surface H2O" constructs the network by hydrogen bonds with the surface Si-O ring of clay, forming the surface cage. The "interlayer H2O" constructs the network by hydrogen bonds, forming the interlayer cage. CH4 molecules and their surrounding H2O molecules form clathrate hydrates. The cation of montmorillonite has a steric effect on constructing the network and destroying the balance of hydrogen bonds between the H2O molecules, distorting the cage of hydrate in clay. Therefore, the cages are irregular, which is unlike the ideal CH4 clathrate hydrates cage. The pore size of montmorillonite is another impact factor to the hydrate formation. It is quite easier to form CH4 hydrate nucleation in montmorillonite with large pore size than in montmorillonite with small pore. The MD work provides the constructive information to the investigation of the reservoir formation for natural gas hydrate (NGH) in sediments.
SubtypeReview
KeywordFormation Mechanism Methane Hydrate Molecular Dynamics Simulation Montmorillonite
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences ; Technology
DOI10.1007/s00894-014-2311-8
WOS Subject ExtendedBiochemistry & Molecular Biology ; Biophysics ; Chemistry ; Computer Science
WOS KeywordNATURAL POROUS-MEDIA ; GAS-HYDRATE ; MONTE-CARLO ; CRYSTAL-GROWTH ; NA-MONTMORILLONITE ; CLATHRATE HYDRATE ; MACKENZIE DELTA ; CARBON-DIOXIDE ; SMECTITE CLAY ; FORCE-FIELD
Indexed BySCI
Language英语
WOS SubjectBiochemistry & Molecular Biology ; Biophysics ; Chemistry, Multidisciplinary ; Computer Science, Interdisciplinary Applications
WOS IDWOS:000338632200002
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Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10619
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Yan, KeFeng,Li, XiaoSen,Xu, ChunGang,et al. Molecular dynamics simulation of the intercalation behaviors of methane hydrate in montmorillonite[J]. JOURNAL OF MOLECULAR MODELING,2014,20(6).
APA Yan, KeFeng,Li, XiaoSen,Xu, ChunGang,Lv, QiuNan,&Ruan, XuKe.(2014).Molecular dynamics simulation of the intercalation behaviors of methane hydrate in montmorillonite.JOURNAL OF MOLECULAR MODELING,20(6).
MLA Yan, KeFeng,et al."Molecular dynamics simulation of the intercalation behaviors of methane hydrate in montmorillonite".JOURNAL OF MOLECULAR MODELING 20.6(2014).
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