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서용원

Seo, Yongwon
Advanced Clean Energy Lab.
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dc.citation.endPage 9748 -
dc.citation.number 12 -
dc.citation.startPage 9742 -
dc.citation.title LANGMUIR -
dc.citation.volume 26 -
dc.contributor.author Lee, Seungmin -
dc.contributor.author Seo, Yongwon -
dc.date.accessioned 2023-12-22T07:08:09Z -
dc.date.available 2023-12-22T07:08:09Z -
dc.date.created 2014-10-30 -
dc.date.issued 2010-06 -
dc.description.abstract We measured hydrate phase equilibria for the ternary CH4 (90%)+ C3H8 (10%)+ water mixtures in silica gel pores with nominal diameters of 6.0, 15.0, 30.0, and 100.0 nm and for the quaternary CH4 (90%)+ C3H8 (10%) + NaCl + water mixtures of two different NaCl concentrations (3 and 10 wt%) in silica gel pores with nominal diameters of 6.0, 15.0, and 30.0 nm. The CH4 (90%)+ C 3H8 (10%) hydrate-water interfacial tension (σHW) of 42 ± 3mJ/m2 was obtained through the Gibbs-Thomson equation for dissociation within cylindrical pores. With this value, the experimental results were in good agreement with the calculated ones based on the van der Waals and Platteeuw model. A correction term for the capillary effect and a Pitzer model for electrolyte solutions were adopted to calculate the activity of water in the aqueous electrolyte solutionswithin silica gel pores. At a specified temperature, three-phaseH-LW- Vequilibriumcurves of pore hydrateswere shifted to higher-pressure regions depending on pore sizes and NaCl concentrations. From the cage-dependent 13CNMR chemical shifts of enclathrated guest molecules, the mixed CH4 (90%)+ C3H8 (10%) gas hydrate was confirmed to be structure II. -
dc.identifier.bibliographicCitation LANGMUIR, v.26, no.12, pp.9742 - 9748 -
dc.identifier.doi 10.1021/la100466s -
dc.identifier.issn 0743-7463 -
dc.identifier.scopusid 2-s2.0-78649624767 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/8063 -
dc.identifier.url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=78649624767 -
dc.identifier.wosid 000278427600080 -
dc.language 영어 -
dc.publisher AMER CHEMICAL SOC -
dc.title Experimental Measurement and Thermodynamic Modeling of the Mixed CH4 + C3H8 Clathrate Hydrate Equilibria in Silica Gel Pores: Effects of Pore Size and Salinity -
dc.type Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -

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