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DC Field | Value | Language |
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dc.citation.startPage | 121974 | - |
dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 375 | - |
dc.contributor.author | Lee, Joonseop | - |
dc.contributor.author | Kim, Ki-Sub | - |
dc.contributor.author | Seo, Yongwon | - |
dc.date.accessioned | 2023-12-21T18:36:45Z | - |
dc.date.available | 2023-12-21T18:36:45Z | - |
dc.date.created | 2019-07-01 | - |
dc.date.issued | 2019-11 | - |
dc.description.abstract | This study examines the thermodynamic, structural, and kinetic characterizations of cyclopentane (CP) + CO2 hydrates in the presence of NaCl for their potential applications in desalination and CO2 capture. Powder X-ray diffraction (PXRD) demonstrated that CP molecules fully occupied the large (51264) cages of CP + CO2 hydrate (structure II), whereas approximately 62% of the small (5 1 2) cages were captured by CO2 molecules. To determine accurate hydration numbers and dissociation enthalpies of CP and CP + CO2 hydrates, cage occupancy of guest molecules revealed by Rietveld refinement of PXRD patterns was combined with integrated areas of endothermic heat-flow curves obtained by a high-pressure micro-differential scanning calorimeter (HP μ-DSC). The addition of CP contributed to a significant stabilization of CO2 hydrate due to CP molecules’ occupation of the large (51264) cages and a subsequent structural transformation to sII. The shift in the equilibrium curves of CO2 + CP + NaCl hydrates to lower-temperature and higher-pressure regions was more significant at higher NaCl concentrations. The cage-filling behavior of guest molecules and the growth patterns revealed by collected time-dependent Raman spectra indicated that the presence of NaCl retarded the growth rate of CO2 + CP hydrate. The experimental results covering hydrate phase equilibria, dissociation enthalpies, hydration numbers, guest distributions, and enclathration behaviors of CO2 + CP hydrates form fundamental reference data for understanding cage-specific guest occupation and growth behaviors of gas hydrates in the presence of salts. The results will also be useful when designing hydrate-based desalination and CO2 capture technologies using CP. | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.375, pp.121974 | - |
dc.identifier.doi | 10.1016/j.cej.2019.121974 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.scopusid | 2-s2.0-85067231410 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/30340 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S1385894719313683?via%3Dihub | - |
dc.identifier.wosid | 000483341000022 | - |
dc.language | 영어 | - |
dc.publisher | Elsevier B.V. | - |
dc.title | Thermodynamic, structural, and kinetic studies of cyclopentane + CO2 hydrates: Applications for desalination and CO2 capture | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental; Engineering, Chemical | - |
dc.relation.journalResearchArea | Engineering | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | CO2 capture | - |
dc.subject.keywordAuthor | Cyclopentane | - |
dc.subject.keywordAuthor | Desalination | - |
dc.subject.keywordAuthor | Enclathration | - |
dc.subject.keywordAuthor | Gas hydrates | - |
dc.subject.keywordPlus | CLATHRATE HYDRATE FORMATION | - |
dc.subject.keywordPlus | CARBON-DIOXIDE | - |
dc.subject.keywordPlus | GAS HYDRATE | - |
dc.subject.keywordPlus | NATURAL-GAS | - |
dc.subject.keywordPlus | CO2 CAPTURE | - |
dc.subject.keywordPlus | FLUE-GAS | - |
dc.subject.keywordPlus | DESALINATION | - |
dc.subject.keywordPlus | SEPARATION | - |
dc.subject.keywordPlus | MIXTURES | - |
dc.subject.keywordPlus | REMOVAL | - |
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