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    An experimental and simulation study of binary adsorption in metal-organic frameworks

    Access Status
    Fulltext not available
    Authors
    Yang, Y.
    Sitprasert, C.
    Rufford, T.
    Ge, L.
    Shukla, P.
    Wang, Shaobin
    Rudolph, V.
    Zhu, Z.
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Yang, Y. and Sitprasert, C. and Rufford, T. and Ge, L. and Shukla, P. and Wang, S. and Rudolph, V. et al. 2015. An experimental and simulation study of binary adsorption in metal-organic frameworks. Separation and Purification Technology. 146: pp. 136-142.
    Source Title
    Separation and Purification Technology
    DOI
    10.1016/j.seppur.2015.03.041
    ISSN
    1383-5866
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/24433
    Collection
    • Curtin Research Publications
    Abstract

    Large surface area, high gas adsorption capacity and convenient synthesis methods make microporous metal–organic frameworks (MOFs) a promising adsorbent for gas separation of CO2/N2 and CO2/CH4. This study examines the selective adsorption of CO2 on MOFs through the experimental measurement of equilibrium adsorption capacities from pure fluids (CO2, CH4 and N2) and mixtures of CO2/N2 and CO2/CH4. The derived adsorption selectivity from binary adsorption measurements is higher than the ideal selectivity. Comparing with direct binary adsorption experiments, the Ideal Adsorbed Solution Theory (IAST) model using best-fit parameters for Langmuir isotherms of each pure fluid provides satisfactory predictions for the binary mixtures of CO2/N2 and CO2/CH4. This combined experimental and modeling approach can provide criteria to screen metal–organic frameworks for the separation of gas mixtures at industrially relevant compositions, temperatures and pressures.

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