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Sorption of Enantiomers and Alcohols into Nafion® and the Role of Air Humidity in the Experimental Data Evaluation

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    SYSNO ASEP0445086
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleSorption of Enantiomers and Alcohols into Nafion® and the Role of Air Humidity in the Experimental Data Evaluation
    Author(s) Randová, A. (CZ)
    Bartovská, L. (CZ)
    Hovorka, Š. (CZ)
    Kačírková, Marie (UCHP-M) RID
    Vychodilová, Hana (UCHP-M) RID, SAI
    Sedláková, Zuzana (UCHP-M) RID
    Červenková Šťastná, Lucie (UCHP-M) RID, ORCID, SAI
    Brožová, Libuše (UMCH-V) RID
    Žitka, Jan (UMCH-V) RID
    Sysel, P. (CZ)
    Brus, Jiří (UMCH-V) RID
    Drašar, P. (CZ)
    Izák, Pavel (UCHP-M) RID, ORCID, SAI
    Source TitleSeparation and Purification Technology. - : Elsevier - ISSN 1383-5866
    Roč. 144, APR 15 (2015), s. 232-239
    Number of pages8 s.
    Languageeng - English
    CountryGB - United Kingdom
    Keywordsmembranes ; mass sorption ; enantiomers ; racemic mixtures ; nafion
    Subject RIVCI - Industrial Chemistry, Chemical Engineering
    Subject RIV - cooperationInstitute of Macromolecular Chemistry - Macromolecular Chemistry
    R&D ProjectsGAP106/12/0569 GA ČR - Czech Science Foundation (CSF)
    Institutional supportUCHP-M - RVO:67985858 ; UMCH-V - RVO:61389013
    UT WOS000352664300029
    EID SCOPUS84924529858
    DOI10.1016/j.seppur.2015.02.045
    AnnotationTwo enantiomers may exhibit completely different biological or pharmacological activities; therefore, the resolution of the enantiomers from a racemic mixture is an important task. The results of the total sorption measurements for the individual liquid enantiomers from the enantiomeric pair revealed that there is a difference between extents of their sorption in Nafion®. The difference between liquid sorption of the enantiomers of small molecules, such as the methyl lactates or 2-butanols, is higher than in the case of larger molecules, such as phenylethanols and methylbenzyl amines. This result could be explained by the hypothesis that the size of the chiral molecule must fit like a puzzle piece into the Nafion® helical polymer network. This hypothesis was supported by the 19F MAS NMR analysis, which confirmed the helical structure of Nafion®. Further, the branching of the molecules significantly influences the extent of sorption of the liquid in Nafion®, as shown for the butanols. The trend of this dependence is in agreement with the trend of heat of vaporisation and the normal boiling temperature data of the butanols. Because Nafion® easily absorbs water vapour from the air, the influence of the humidity on the sorption values was studied.
    WorkplaceInstitute of Chemical Process Fundamentals
    ContactEva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
    Year of Publishing2016
Number of the records: 1