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CO<inf>2</inf> absorption and ion mobility in aqueous choline-based ionic liquids

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dc.contributor.author Filippov A.
dc.contributor.author Bhattacharyya S.
dc.contributor.author Shah F.
dc.date.accessioned 2020-01-22T20:32:42Z
dc.date.available 2020-01-22T20:32:42Z
dc.date.issued 2019
dc.identifier.issn 0167-7322
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/157932
dc.description.abstract © 2018 Elsevier B.V. CO2 absorption and ion mobility are investigated in a series of 50/50 wt% aqueous solutions of choline-based ionic liquids with different cations and anions: [N1,1,4,2OH][Threo], [N1,1,5,2OH][Threo], [N1,1,6,2OH][Threo], [N1,1,5,2OH][β-ala] and [N1,1,5,2OH][Tau]. The process of CO2 absorption was completed in an hour reaching maximum of absorption capacity 0.07–0.10 wt% to ionic liquid (by 0.4–0.6 molar ratios). A rapid CO2 absorption is observed by the formation of solid product as a result of reaction between CO2 molecule and the ionic liquid. Diffusion coefficients of the cation and anion in the mixture are comparable while the diffusivity of water molecules is found to be quite different from the ions. In the process of CO2 absorption, an increase in the diffusivity of ions is observed due to the precipitation of solid products and depletion of ions contents in the liquid phase of the system. 13C NMR measurements of diffusivity of CO2 enriched with 13C isotope showed that a part of the absorbed CO2 remained in the liquid phase being physically and chemically bound to ions. The ionic liquid is re-cycled by evaporating water and releasing CO2 molecules using vacuum and temperature.
dc.relation.ispartofseries Journal of Molecular Liquids
dc.subject CO absorption 2
dc.subject Diffusivity of ions
dc.subject Ionic liquids
dc.subject Nuclear magnetic resonance
dc.subject Phase transformations
dc.title CO<inf>2</inf> absorption and ion mobility in aqueous choline-based ionic liquids
dc.type Article
dc.relation.ispartofseries-volume 276
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 748
dc.source.id SCOPUS01677322-2019-276-SID85058405735


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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