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Permeation and sorption properties of CO2-selective blend membranesnbased on polyvinyl alcohol (PVA) and 1-ethyl-3-methylimidazoliumndicyanamide ([EMIM][DCA]) ionic liquid for effective CO2/H2 separation.

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F20%3A00541297" target="_blank" >RIV/67985858:_____/20:00541297 - isvavai.cz</a>

  • Result on the web

    <a href="http://hdl.handle.net/11104/0318878" target="_blank" >http://hdl.handle.net/11104/0318878</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.memsci.2019.117623" target="_blank" >10.1016/j.memsci.2019.117623</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Permeation and sorption properties of CO2-selective blend membranesnbased on polyvinyl alcohol (PVA) and 1-ethyl-3-methylimidazoliumndicyanamide ([EMIM][DCA]) ionic liquid for effective CO2/H2 separation.

  • Original language description

    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.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20401 - Chemical engineering (plants, products)

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2020

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Membrane Science

  • ISSN

    0376-7388

  • e-ISSN

    1873-3123

  • Volume of the periodical

    597

  • Issue of the periodical within the volume

    MAR 1

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    8

  • Pages from-to

    117623

  • UT code for WoS article

    000512684200010

  • EID of the result in the Scopus database

    2-s2.0-85075859242