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dc.contributor.authorDai, Zhongde
dc.contributor.authorAnsaloni, Luca
dc.contributor.authorRyan, Justin J.
dc.contributor.authorSpontak, Richard J
dc.contributor.authorDeng, Liyuan
dc.date.accessioned2019-03-20T15:41:47Z
dc.date.available2019-03-20T15:41:47Z
dc.date.created2018-03-05T17:26:21Z
dc.date.issued2018
dc.identifier.citationGreen Chemistry. 2018, 20 (6), 1391-1404.nb_NO
dc.identifier.issn1463-9262
dc.identifier.urihttp://hdl.handle.net/11250/2590941
dc.description.abstractPolyelectrolytes have been reported to display gas permeation properties that can be of significant interest for CO2 capture applications, especially when they are fully hydrated. In this work, hybrid membranes prepared by co-casting an ionic liquid (IL), 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim][BF4]), with Nafion have been investigated for use in carbon capture. Gas permeabilities of different gaseous species have been measured for IL concentrations up to 40 wt%. Moreover, the effect of water vapor on gas permeation is examined with humidified CO2/N2 gas mixtures at various relative humidity (RH) levels. These experiments reveal that CO2 permeability is greatly enhanced upon addition of the IL and in the presence of water in the gas stream, most likely due to the formation of IL nanochannels in the Nafion matrix. Small-angle X-ray scattering confirms changes in the nanostructure at different IL loading levels. Hybrid membranes containing 40 wt% [Bmim][BF4] exhibit a mixed-gas CO2 permeability of 390 Barrer with a corresponding CO2/N2 selectivity of ∼30 at 100% RH, which is more than 3× that of the permeability measured from the same IL-containing membrane in the dry state and more than 200× higher than that of dry Nafion. Such improvements suggest the existence of a synergetic relationship between the IL and water vapor with regard to Nafion gas-transport properties, yielding superior separation performance with an enhanced gas flux compared to extruded Nafion membranes. These results represent a viable fabrication strategy for the production of thin Nafion-based membranes for CO2 capture.nb_NO
dc.language.isoengnb_NO
dc.publisherRoyal Society of Chemistrynb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleNafion/IL hybrid membranes with tuned nanostructure for enhanced CO2 separation: effects of ionic liquid and water vapornb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber1391-1404nb_NO
dc.source.volume20nb_NO
dc.source.journalGreen Chemistrynb_NO
dc.source.issue6nb_NO
dc.identifier.doi10.1039/c7gc03727a
dc.identifier.cristin1570581
dc.relation.projectEC/FP7/608555nb_NO
dc.description.localcodeThis article is licensed under a Creative Commons Attribution 3.0 Unported Licence.nb_NO
cristin.unitcode194,66,30,0
cristin.unitnameInstitutt for kjemisk prosessteknologi
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal