Počet záznamů: 1

Nafion membranes modified by cationic cyclodextrin derivatives for enantioselective separation.

SYSNO ASEP	0540919
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Nafion membranes modified by cationic cyclodextrin derivatives for enantioselective separation.
Tvůrce(i)	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, SAI}
Číslo článku	118538
Zdroj.dok.	Separation and Purification Technology. - : Elsevier - ISSN 1383-5866 Roč. 266, Jul 1 (2021)
Poč.str.	10 s.
Jazyk dok.	eng - angličtina
Země vyd.	GB - Velká Británie
Klíč. slova	nafion membranes ; cyclodextrin derivatives ; strong ionic binding
Vědní obor RIV	CI - Průmyslová chemie a chemické inženýrství
Obor OECD	Chemical process engineering
CEP	GA20-09980S GA ČR - Grantová agentura ČR
	GJ19-08153Y GA ČR - Grantová agentura ČR
	FV10082 GA MPO - Ministerstvo průmyslu a obchodu
Způsob publikování	Open access s časovým embargem (02.07.2023)
Institucionální podpora	UCHP-M - RVO:67985858
UT WOS	000647567000006
EID SCOPUS	85102647289
DOI	10.1016/j.seppur.2021.118538
Anotace	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.
Pracoviště	Ústav chemických procesů
Kontakt	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Rok sběru	2022
Elektronická adresa	http://hdl.handle.net/11104/0318604

Počet záznamů: 1