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    Thin film composite membranes functionalized with montmorillonite and hydrotalcite nanosheets for CO2/N2separation

    Access Status
    Fulltext not available
    Authors
    Zhang, Y.
    Wang, H.
    Zhang, Y.
    Ding, X.
    Liu, Jian
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Zhang, Y. and Wang, H. and Zhang, Y. and Ding, X. and Liu, J. 2017. Thin film composite membranes functionalized with montmorillonite and hydrotalcite nanosheets for CO2/N2separation. Separation and Purification Technology. 189: pp. 128-137.
    Source Title
    Separation and Purification Technology
    DOI
    10.1016/j.seppur.2017.07.078
    ISSN
    1383-5866
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/72176
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 Elsevier B.V. Montmorillonite (MMT) and Mg-Al hydrotalcite (HT) nanosheets were prepared via vigorous agitation and ultrasonic, respectively. In order to increase the permeability of CO2, poly (PEA-MMT-TMC)/PS and poly (PEA-HT-TMC)/PS composite membranes were prepared via interfacial polymerization by adding the dimensional (2D) inorganic nanosheets (MMT and HT) into the aqueous phase of PEA. And in consequence, the poly (PEA-MMT-TMC)/PS composite membrane showed CO2permeability of 15.87 barrer and the CO2/N2selectivity of 37 at 1.0 bar when the MMT concentration was 0.068 wt%. The poly (PEA-HT-TMC)/PS composite membrane also showed CO2permeability of 15.3 barrer and the CO2/N2selectivity of 40 at 1.0 bar when the HT concentration was 0.25 wt%. Compared with the controlled membrane (CO2permeability: 6.9 barrer, CO2/N2selectivity: 103), the CO2permeability increased after incorporating the inorganic nanosheets into the membranes and maintained the pretty CO2/N2selectivity. The addition of exfoliated MMT and HT could facilitate the gas permeation to improve the gas separation performance of the composite membranes. Also, the combination of inorganic nanosheets with organic membrane has a great potential application in the gas separation.

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