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Gas separation performance of carbon dioxide-selective poly(vinyl alcohol)-ionic liquid blend membranes: The effect of temperature, feed pressure and humidity.
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SYSNO ASEP 0552480 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Gas separation performance of carbon dioxide-selective poly(vinyl alcohol)-ionic liquid blend membranes: The effect of temperature, feed pressure and humidity. Author(s) Klepić, M. (CZ)
Jansen, J.C. (IT)
Fuoco, A. (IT)
Esposito, E. (IT)
Izák, Pavel (UCHP-M) RID, ORCID, SAI
Petrusová, Zuzana (UCHP-M) RID, ORCID, SAI
Vankelecom, Ivo F.J. (BE)
Randová, A. (CZ)
Fíla, V. (CZ)
Lanč, M. (CZ)
Friess, Karel (UCHP-M)Article number 118812 Source Title Separation and Purification Technology. - : Elsevier - ISSN 1383-5866
Roč. 270, SEP 1 (2021)Number of pages 9 s. Language eng - English Country GB - United Kingdom Keywords blend membrane ; transport properties ; ionic liquid ; poly (vinyl alcohol) Subject RIV CI - Industrial Chemistry, Chemical Engineering OECD category Chemical process engineering R&D Projects EF16_026/0008413 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access with time embargo (02.09.2023) Institutional support UCHP-M - RVO:67985858 UT WOS 000652642100006 EID SCOPUS 85106297238 DOI 10.1016/j.seppur.2021.118812 Annotation Membrane separation technology is rapidly emerging as an alternative to traditional gas separation processes, and increasingly challenging separations require a constant search for new and better-performing materials. This paper reports the gas separation performance of a poly (vinyl alcohol) (PVA) membrane blended with 53 wt% of the ionic liquid 1-ethyl-3-methyl-imidazolium dicyanamide ([EMIM][DCA]), known from our previous work as highly CO2/H-2 reverse-selective material, under different experimental conditions. The material properties of the solution-cast membranes are discussed and compared with the neat PVA polymer. Pure gas permeation measurements show a drastic increase of permeability for all gases (H-2, He, O-2, N-2, CH4, and CO2) compared to the neat polymer, with a change from diffusion-selective to sorption-selective behaviour. The gas permeability further increases over the temperature range from 25 degrees C to 55 degrees C and is accompanied by a decrease in selectivity for most gas pairs, in particular, CO2/N-2 and CO2/CH4, except for the H-2/CO2 gas pair. Mixed gas permeation measurements with the CO2/CH4 mixture show a beneficial effect of humidity on permeability and selectivity. This is supported by vapour sorption measurements, which show the high affinity of the membrane for water vapour and the vapour of lower alcohols. 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/11104/0327596
Number of the records: 1