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Nafion membranes modified by cationic cyclodextrin derivatives for enantioselective separation.
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SYSNO ASEP 0540919 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nafion membranes modified by cationic cyclodextrin derivatives for enantioselective separation. Author(s) Gaálová, Jana (UCHP-M) RID, SAI, ORCID
Michel, Marine (UCHP-M)
Bourassi, Mahdi (UCHP-M) ORCID, RID, SAI
Ladewing, B.P. (GB)
Kasal, P. (CZ)
Jindřich, J. (CZ)
Izák, Pavel (UCHP-M) RID, ORCID, SAIArticle number 118538 Source Title Separation and Purification Technology. - : Elsevier - ISSN 1383-5866
Roč. 266, Jul 1 (2021)Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords nafion membranes ; cyclodextrin derivatives ; strong ionic binding Subject RIV CI - Industrial Chemistry, Chemical Engineering OECD category Chemical process engineering R&D Projects GA20-09980S GA ČR - Czech Science Foundation (CSF) GJ19-08153Y GA ČR - Czech Science Foundation (CSF) FV10082 GA MPO - Ministry of Industry and Trade (MPO) Method of publishing Open access with time embargo (02.07.2023) Institutional support UCHP-M - RVO:67985858 UT WOS 000647567000006 EID SCOPUS 85102647289 DOI https://doi.org/10.1016/j.seppur.2021.118538 Annotation Nafion117® membranes modified by three cationic cyclodextrin (CD) derivatives have been prepared by strong ionic bonding. All CD derivatives contained bis(methylimidazolium) (MIM2) cationic anchor covalently bound to the CD unit, either using no spacer or using diethylene glycol (DEG) or tetraethylene glycol (TEEG) spacers. The modified membranes were tested in chiral separation of a model racemic mixture (d/l-tryptophan) from water. Different experimental set-ups for characterising membranes in enantioselective separation – pertraction, two kinds of sorption, and pressure-driven membrane separation – have been described and rigorously compared. The membranes CD-MIM2, CD-DEG-MIM2 have reached the highest enantiomeric excess, 14 and 44% respectively, in 280 days. The lowest performance of the CD-TEEG-MIM2 membrane, with the long spacer, has been visibly ameliorated by applying pertraction, enantiomeric excess rose from 2 to 27% in 80 days. Even though sorption played the main role in pertraction, this process substantially enhanced the separation of racemic mixtures. The pressure-driven approach has allowed the operation to be continuous and faster, which has the potential for continuous large-scale production of enantiopure compounds and could pave the way for many more commercial applications, satisfying the considerable demand for large-scale chiral separation techniques. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2022 Electronic address http://hdl.handle.net/11104/0318604
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