Spectroscopic analysis of carbon dioxide and nitrogen mixed gas hydrates in silica gel for CO2 separation

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dc.contributor.authorPark, Jae Sungko
dc.contributor.authorSeo, Yu Taekko
dc.contributor.authorLee, Jong Wonko
dc.contributor.authorLee, Huenko
dc.date.accessioned2008-03-18T09:54:31Z-
dc.date.available2008-03-18T09:54:31Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2006-06-
dc.identifier.citationCATALYSIS TODAY, v.115, no.1-4, pp.279 - 282-
dc.identifier.issn0920-5861-
dc.identifier.urihttp://hdl.handle.net/10203/3457-
dc.description.abstractIn this study solid-state NMR spectroscopy was used to identify structure and guest distribution of the mixed N-2 + CO2 hydrates. These results show that it is possible to recover CO, from flue gas by forming a mixed hydrate that removes CO2 preferentially from CO2/N-2 gas mixture. Hydrate phase equilibria for the ternary CO2-N-2-water system in silica gel pores were measured, which show that the three-phase H-L-w-V equilibrium curves were shifted to higher pressures at a specific temperature when the concentration of CO2 in the vapor phase decreased. C-13 cross-polarization (CP) NMR spectra of the mixed hydrates at gas compositions of more than 10 mol% CO, with the balance N-2 identified that the crystal structure of mixed hydrates as structure 1, and that the CO2 molecules occupy mainly the abundant 5 12 6 2 cages. This makes it possible to achieve concentrations of more than 96 mol% CO2 gas in the product after three cycles of hydrate formation and dissociation. (c) 2006 Elsevier B.V. All rights reserved.-
dc.languageEnglish-
dc.language.isoen_USen
dc.publisherELSEVIER SCIENCE BV-
dc.subjectC-13 NMR-SPECTROSCOPY-
dc.subjectX-RAY-DIFFRACTION-
dc.subjectCAGE OCCUPANCY-
dc.subjectMETHANE-
dc.subjectGUEST-
dc.subjectOCEAN-
dc.titleSpectroscopic analysis of carbon dioxide and nitrogen mixed gas hydrates in silica gel for CO2 separation-
dc.typeArticle-
dc.identifier.wosid000238416100038-
dc.identifier.scopusid2-s2.0-33646767469-
dc.type.rimsART-
dc.citation.volume115-
dc.citation.issue1-4-
dc.citation.beginningpage279-
dc.citation.endingpage282-
dc.citation.publicationnameCATALYSIS TODAY-
dc.identifier.doi10.1016/j.cattod.2006.02.059-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.contributor.localauthorSeo, Yu Taek-
dc.contributor.localauthorLee, Huen-
dc.contributor.nonIdAuthorPark, Jae Sung-
dc.contributor.nonIdAuthorLee, Jong Won-
dc.type.journalArticleArticle; Proceedings Paper-
dc.subject.keywordAuthorclathrate hydrate-
dc.subject.keywordAuthornitrogen-
dc.subject.keywordAuthorcarbon dioxide-
dc.subject.keywordAuthorsilica gel-
dc.subject.keywordAuthorC-13 NMR analysis-
dc.subject.keywordPlusC-13 NMR-SPECTROSCOPY-
dc.subject.keywordPlusX-RAY-DIFFRACTION-
dc.subject.keywordPlusCAGE OCCUPANCY-
dc.subject.keywordPlusMETHANE-
dc.subject.keywordPlusGUEST-
dc.subject.keywordPlusOCEAN-
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