DC Field | Value | Language |
---|---|---|
dc.contributor.author | Seo, Yu Taek | ko |
dc.contributor.author | Moudrakovski, IL | ko |
dc.contributor.author | Ripmeester, JA | ko |
dc.contributor.author | Lee, JW | ko |
dc.contributor.author | Lee, Huen | ko |
dc.date.accessioned | 2008-04-02T07:03:00Z | - |
dc.date.available | 2008-04-02T07:03:00Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2005-04 | - |
dc.identifier.citation | ENVIRONMENTAL SCIENCE & TECHNOLOGY, v.39, no.7, pp.2315 - 2319 | - |
dc.identifier.issn | 0013-936X | - |
dc.identifier.uri | http://hdl.handle.net/10203/3622 | - |
dc.description.abstract | Thermodynamic measurements and NMR spectroscopic analysis were used to show that it is possible to recover CO2 from flue gas by forming a mixed hydrate that removes CO2 preferentially from CO2/N-2 gas mixtures using water dispersed in the pores of silica gel. Kinetic studies with H-1 NMR microimaging showed that the dispersed water in the silica gel pore system reacts readily with the gas, thus obviating the need for a stirred reactor and excess water. Hydrate phase equilibria for the ternary CO2-N-2-water system in silica gel pores were measured, which show that the three-phase hydrate-water-rich liquid-vapor 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 NMR spectral analysis and direct measurement of the CO2 content in the hydrate phase suggested that the mixed hydrate is structure 1 at gas compositions of more than 10 mol % CO2, and that the CO2 molecules occupy mainly the more 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. H-1 NMR Microimaging showed that hydrate yields of better than 85%, based on the amount of water, could be obtained in 1 h when a steady state was reached, although similar to 90% of this yield was achieved after similar to 20 min of reaction time. | - |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | C-13 NMR-SPECTROSCOPY | - |
dc.subject | X-RAY-DIFFRACTION | - |
dc.subject | CARBON-DIOXIDE | - |
dc.subject | PHASE-BEHAVIOR | - |
dc.subject | DEUTERATED ICE | - |
dc.subject | CAGE OCCUPANCY | - |
dc.subject | METHANE | - |
dc.subject | NUCLEATION | - |
dc.subject | XE-129 | - |
dc.subject | GUEST | - |
dc.title | Efficient recovery of CO2 from flue gas by clathrate hydrate formation in porous silica gels | - |
dc.type | Article | - |
dc.identifier.wosid | 000228172600065 | - |
dc.identifier.scopusid | 2-s2.0-16844366527 | - |
dc.type.rims | ART | - |
dc.citation.volume | 39 | - |
dc.citation.issue | 7 | - |
dc.citation.beginningpage | 2315 | - |
dc.citation.endingpage | 2319 | - |
dc.citation.publicationname | ENVIRONMENTAL SCIENCE & TECHNOLOGY | - |
dc.identifier.doi | 10.1021/es049269z | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Seo, Yu Taek | - |
dc.contributor.localauthor | Lee, Huen | - |
dc.contributor.nonIdAuthor | Moudrakovski, IL | - |
dc.contributor.nonIdAuthor | Ripmeester, JA | - |
dc.contributor.nonIdAuthor | Lee, JW | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | C-13 NMR-SPECTROSCOPY | - |
dc.subject.keywordPlus | X-RAY-DIFFRACTION | - |
dc.subject.keywordPlus | CARBON-DIOXIDE | - |
dc.subject.keywordPlus | PHASE-BEHAVIOR | - |
dc.subject.keywordPlus | DEUTERATED ICE | - |
dc.subject.keywordPlus | CAGE OCCUPANCY | - |
dc.subject.keywordPlus | METHANE | - |
dc.subject.keywordPlus | NUCLEATION | - |
dc.subject.keywordPlus | XE-129 | - |
dc.subject.keywordPlus | GUEST | - |
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