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DC Field | Value | Language |
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dc.citation.startPage | 121054 | - |
dc.citation.title | ENERGY | - |
dc.citation.volume | 232 | - |
dc.contributor.author | Mok, Junghoon | - |
dc.contributor.author | Choi, Wonjung | - |
dc.contributor.author | Seo, Yongwon | - |
dc.date.accessioned | 2023-12-21T15:10:18Z | - |
dc.date.available | 2023-12-21T15:10:18Z | - |
dc.date.created | 2021-11-18 | - |
dc.date.issued | 2021-10 | - |
dc.description.abstract | In this study, the dissociation behavior and the time-dependent guest distributions of methane (CH4) hydrate after the injection of gaseous N-2 were closely investigated using gas chromatography, in situ Raman spectroscopy, and nuclear magnetic resonance (NMR) spectroscopy for two different N-2 gas injecting pressures (4.0 and 8.0 MPa) at three different temperatures (268.8, 274.2, and 278.2 K). The dissociation kinetics of the CH4 hydrate were accelerated at a higher temperature and a lower N-2 injecting pressure. Time-dependent Raman spectra confirmed that the N-2 molecules began to be captured in the hydrate cages immediately after the N-2 gas injection at 268.8 K, and the extent of N-2 incorporation in the hydrate phase increased at a higher N-2 gas injecting pressure. The C-13 NMR spectra revealed that an increase in the N-2 composition in the hydrate phase induced a structural transition of the CH4 + N-2 hydrates from sI to sII and that N-2 molecules were preferentially captured in the small (512) cages of the CH4 + N-2 hydrates. The overall results provide deep insight into the exact role of N-2 mol-ecules in the inhibitor injection method and CH4 - CO2 + N-2 replacement methods for the exploitation of natural gas hydrates. (C) 2021 Elsevier Ltd. All rights reserved. | - |
dc.identifier.bibliographicCitation | ENERGY, v.232, pp.121054 | - |
dc.identifier.doi | 10.1016/j.energy.2021.121054 | - |
dc.identifier.issn | 0360-5442 | - |
dc.identifier.scopusid | 2-s2.0-85108739735 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/54889 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0360544221013025?via%3Dihub | - |
dc.identifier.wosid | 000707630400015 | - |
dc.language | 영어 | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | The dual-functional roles of N-2 gas for the exploitation of natural gas hydrates: An inhibitor for dissociation and an external guest for replacement | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Thermodynamics; Energy & Fuels | - |
dc.relation.journalResearchArea | Thermodynamics; Energy & Fuels | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Natural gas hydrates | - |
dc.subject.keywordAuthor | N-2 injection | - |
dc.subject.keywordAuthor | Kinetics | - |
dc.subject.keywordAuthor | Cage preference | - |
dc.subject.keywordAuthor | Replacement | - |
dc.subject.keywordAuthor | Dissociation | - |
dc.subject.keywordPlus | CARBON DIOXIDE REPLACEMENT | - |
dc.subject.keywordPlus | METHANE-HYDRATE | - |
dc.subject.keywordPlus | PRODUCTION BEHAVIOR | - |
dc.subject.keywordPlus | POROUS SEDIMENT | - |
dc.subject.keywordPlus | NITROGEN | - |
dc.subject.keywordPlus | INJECTION | - |
dc.subject.keywordPlus | RECOVERY | - |
dc.subject.keywordPlus | EXCHANGE | - |
dc.subject.keywordPlus | DEPRESSURIZATION | - |
dc.subject.keywordPlus | CO2 | - |
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