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

SYSNO ASEP	0445086
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Sorption 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, ORCID, SAI} Červenková Šťastná, Lucie (UCHP-M)_{RID, ORCID, SAI} Brožová, Libuše (UMCH-V)_{RID, ORCID} Žitka, Jan (UMCH-V)_RID Sysel, P. (CZ) Brus, Jiří (UMCH-V)_{RID, ORCID} Drašar, P. (CZ) Izák, Pavel (UCHP-M)_{RID, ORCID, SAI}
Source Title	Separation and Purification Technology. - : Elsevier - ISSN 1383-5866 Roč. 144, APR 15 (2015), s. 232-239
Number of pages	8 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	membranes ; mass sorption ; enantiomers ; racemic mixtures ; nafion
Subject RIV	CI - Industrial Chemistry, Chemical Engineering
Subject RIV - cooperation	Institute of Macromolecular Chemistry - Macromolecular Chemistry
R&D Projects	GAP106/12/0569 GA ČR - Czech Science Foundation (CSF)
Institutional support	UCHP-M - RVO:67985858 ; UMCH-V - RVO:61389013
UT WOS	000352664300029
EID SCOPUS	84924529858
DOI	10.1016/j.seppur.2015.02.045
Annotation	Two 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.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2016

Number of the records: 1