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DC Field | Value | Language |
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dc.citation.endPage | 15701 | - |
dc.citation.number | 29 | - |
dc.citation.startPage | 15693 | - |
dc.citation.title | PHYSICAL CHEMISTRY CHEMICAL PHYSICS | - |
dc.citation.volume | 23 | - |
dc.contributor.author | Mok, Junghoon | - |
dc.contributor.author | Lim, Junkyu | - |
dc.contributor.author | Choi, Wonjung | - |
dc.contributor.author | Yun, Soyeong | - |
dc.contributor.author | Lee, Joonseop | - |
dc.contributor.author | Ko, Gyeol | - |
dc.contributor.author | Seo, Yongwon | - |
dc.date.accessioned | 2023-12-21T15:37:04Z | - |
dc.date.available | 2023-12-21T15:37:04Z | - |
dc.date.created | 2021-08-09 | - |
dc.date.issued | 2021-08 | - |
dc.description.abstract | In this study, a new sI-sII dual hydrate former [chlorodifluoromethane (CHClF2); an important greenhouse gas with a global warming potential of 1810], which forms sI hydrate by itself and forms sII hydrate in the presence of external help guests such as CH4 and N-2, was introduced and closely investigated for its potential significance in gas hydrate-based gas separation. The phase equilibria of CHClF2 hydrate, binary CHClF2 (5%) + N-2 (95%) hydrate, and binary CHClF2 (5%) + CH4 (95%) hydrate were measured to examine the formation conditions and thermodynamic stability regions of CHClF2 + external guest hydrates. Nuclear magnetic resonance and in situ Raman spectroscopic results confirmed the formation of sII hydrates for CHClF2 + external guest (N-2 or CH4) mixtures. Powder X-ray diffraction patterns clearly demonstrated a structural transition of sI to sII hydrates and a preferential incorporation of CHClF2 molecules in the hydrate phase when external guests (N-2 or CH4) were involved in CHClF2 hydrate formation. The measured dissociation enthalpy values of CHClF2 hydrate, binary CHClF2 (5%) + N-2 (95%) hydrate, and binary CHClF2 (5%) + CH4 (95%) hydrate using a high-pressure micro-differential scanning calorimeter also indicated preferential CHClF2 enclathration. The experimental results provide new insights into the thermodynamic and structural features of the CHClF2 (sI-sII dual hydrate former) + external guest hydrates for understanding and designing the hydrate-based CHClF2 separation process. | - |
dc.identifier.bibliographicCitation | PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.23, no.29, pp.15693 - 15701 | - |
dc.identifier.doi | 10.1039/d1cp02327f | - |
dc.identifier.issn | 1463-9076 | - |
dc.identifier.scopusid | 2-s2.0-85111766581 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/53416 | - |
dc.identifier.url | https://pubs.rsc.org/en/content/articlelanding/2021/CP/D1CP02327F | - |
dc.identifier.wosid | 000672875200001 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Thermodynamic and structural features of chlorodifluoromethane (a sI-sII dual hydrate former) plus external guest (N-2 or CH4) hydrates and their significance for greenhouse gas separation | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Physics, Atomic, Molecular & Chemical | - |
dc.relation.journalResearchArea | Chemistry; Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | CARBON-DIOXIDE | - |
dc.subject.keywordPlus | NATURAL-GAS | - |
dc.subject.keywordPlus | PHASE-EQUILIBRIA | - |
dc.subject.keywordPlus | CO2 CAPTURE | - |
dc.subject.keywordPlus | METHANE | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | RECOVERY | - |
dc.subject.keywordPlus | ETHANE | - |
dc.subject.keywordPlus | DECOMPOSITION | - |
dc.subject.keywordPlus | SELECTIVITY | - |
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