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Seo, Yongwon
Advanced Clean Energy Lab (ACE Lab)
Research Interests
  • Gas Hydrates, Greenhouse Gas, Clean Energy

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Structure identification and dissociation enthalpy measurements of the CO2+N2 hydrates for their application to CO2 capture and storage

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dc.contributor.author Lee, Yohan ko
dc.contributor.author Lee, Seungmin ko
dc.contributor.author Lee, Jaehyoung ko
dc.contributor.author Seo, Yongwon ko
dc.date.available 2014-04-22T06:17:02Z -
dc.date.created 2014-04-22 ko
dc.date.issued 2014-06 ko
dc.identifier.citation CHEMICAL ENGINEERING JOURNAL, v.246, pp.20 - 26 ko
dc.identifier.issn 1385-8947 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/4401 -
dc.description.abstract In this study, the mixed gas hydrates formed from the flue gas mixtures of CO2+N2 have been investigated with a primary focus on the structure identification and the dissociation enthalpy measurements. The stability conditions of the CO2+N2 gas hydrates are determined using an isochoric (PVT) method and a differential scanning calorimeter (DSC). It is found from the comparison of the hydrate phase equilibrium data measured using two methods that the DSC can be effectively used as an alternative method for measuring the stability conditions of the CO2+N2 gas hydrates. The microscopic analyses, such as powder X-ray diffraction and Raman spectroscopy, demonstrated that the gas mixtures of CO2+N2 form a structure I hydrate and that the structural transition does not occur in the range of the flue gas composition. To reveal the dissociation behavior of the mixed gas hydrates, the dissociation enthalpies of the CO2+N2 gas hydrates have been measured using a micro-differential scanning calorimeter (μ-DSC). The dissociation heats of the CO2+N2 gas hydrates increased with an increase of the CO2 composition in the hydrate phase. The experimental results obtained in this study provide the thermodynamic and physical background required to estimate the heat liberated or absorbed during hydrate formation and dissociation and to predict the operation conditions for the gas hydrate-based CO2 capture and storage process. ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher ELSEVIER SCIENCE SA ko
dc.title Structure identification and dissociation enthalpy measurements of the CO2+N2 hydrates for their application to CO2 capture and storage ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84897723412 ko
dc.identifier.wosid 000335275000003 ko
dc.type.rims ART ko
dc.description.wostc 0 *
dc.description.scopustc 0 *
dc.date.tcdate 2014-10-18 *
dc.date.scptcdate 2014-07-12 *
dc.identifier.doi 10.1016/j.cej.2014.02.045 ko
dc.identifier.url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84897723412 ko
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