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Permeation and sorption properties of CO2-selective blend membranes\nbased on polyvinyl alcohol (PVA) and 1-ethyl-3-methylimidazolium\ndicyanamide ([EMIM][DCA]) ionic liquid for effective CO2/H2 separation.
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SYSNO ASEP 0541297 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Permeation and sorption properties of CO2-selective blend membranes
based on polyvinyl alcohol (PVA) and 1-ethyl-3-methylimidazolium
dicyanamide ([EMIM][DCA]) ionic liquid for effective CO2/H2 separation.Author(s) Klepić, M. (CZ)
Setničková, Kateřina (UCHP-M) RID, ORCID, SAI
Lanč, M. (CZ)
Žák, Michal (UCHP-M)
Izák, Pavel (UCHP-M) RID, ORCID, SAI
Dendisová, M. (CZ)
Fuoco, A. (IT)
Jansen, J.C. (IT)
Friess, K. (CZ)Article number 117623 Source Title Journal of Membrane Science. - : Elsevier - ISSN 0376-7388
Roč. 597, MAR 1 (2020)Number of pages 8 s. Language eng - English Country NL - Netherlands Keywords reverse CO2/H(2 )selectivity ; PVA blend membrane with [EMIM][DCA] ionic liquid ; enhanced gas permeability Subject RIV CI - Industrial Chemistry, Chemical Engineering OECD category Chemical engineering (plants, products) R&D Projects GA17-05421S GA ČR - Czech Science Foundation (CSF) EF16_026/0008413 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UCHP-M - RVO:67985858 UT WOS 000512684200010 EID SCOPUS 85075859242 DOI 10.1016/j.memsci.2019.117623 Annotation This paper reports on the preparation and testing of blend membranes based on polyvinyl alcohol (PVA) and 1-ethyl-3-methylimidazolium dicyanamide ([EMIM] [DCA]) ionic liquid (IL) for effective CO2/H-2 gas separation. Stable membranes with 9, 14, 24, 42 and 53 wt.% of IL were prepared via the solution casting procedure. Structural analysis (XRD, Raman, TGA and DSC) revealed that the increase of the incorporated IL content in PVA affected e.g. crystalline orientation in the diffraction plane 1 0 1 in favour of plane 2 0 0. The presence of the IL shifted the Tg (65 degrees C) and Tm (165 degrees C) of neat PVA to lower temperatures, towards the values of pure IL. The gas transport in neat PVA and PVA-IL blends with low IL content was found to be diffusivity-controlled, and the IL addition leads to an increase of both gas permeability and H-2/CO2 selectivity. Instead, membranes with an IL content above 20 wt.% were more permeable for CO2 due to the prevailing solubility-controlled mechanism. Compared to neat PVA, which has barrier properties, the sample PVA-IL with 53 wt.% of IL exhibited an exceptional increase in gas permeability for both gases, H-2 circa 150 times to 8.65 Barrer and CO2 permeability circa 2400 times to 66.9 Barrer, with the corresponding ideal CO2/H-2 selectivity of 7.73 that slightly exceeds the reverse CO2/H-2 Robeson 2008 upper bound. 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/11104/0318878
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