Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Temperature dependence of adsorption hysteresis in flexible metal organic frameworks

    Access Status
    In process
    Authors
    Rahman, S.
    Arami-Niya, Arash
    Yang, X.
    Xiao, G.
    Li, G.
    May, E.F.
    Date
    2020
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Rahman, S. and Arami-Niya, A. and Yang, X. and Xiao, G. and Li, G. and May, E.F. 2020. Temperature dependence of adsorption hysteresis in flexible metal organic frameworks. Communications Chemistry. 3 (1): ARTN 186.
    Source Title
    Communications Chemistry
    DOI
    10.1038/s42004-020-00429-3
    ISSN
    2399-3669
    Faculty
    Faculty of Science and Engineering
    School
    WASM: Minerals, Energy and Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/82395
    Collection
    • Curtin Research Publications
    Abstract

    © 2020, The Author(s). “Breathing” and “gating” are striking phenomena exhibited by flexible metal-organic frameworks (MOFs) in which their pore structures transform upon external stimuli. These effects are often associated with eminent steps and hysteresis in sorption isotherms. Despite significant mechanistic studies, the accurate description of stepped isotherms and hysteresis remains a barrier to the promised applications of flexible MOFs in molecular sieving, storage and sensing. Here, we investigate the temperature dependence of structural transformations in three flexible MOFs and present a new isotherm model to consistently analyse the transition pressures and step widths. The transition pressure reduces exponentially with decreasing temperature as does the degree of hysteresis (c.f. capillary condensation). The MOF structural transition enthalpies range from +6 to +31 kJ·mol−1 revealing that the adsorption-triggered transition is entropically driven. Pressure swing adsorption process simulations based on flexible MOFs that utilise the model reveal how isotherm hysteresis can affect separation performance.

    Related items

    Showing items related by title, author, creator and subject.

    • On the 2D-transition, hysteresis and thermodynamic equilibrium of Kr adsorption on a graphite surface
      Diao, R.; Fan, Chunyan; Do, D.; Nicholson, D. (2015)
      © 2015 Elsevier Inc. The adsorption and desorption of Kr on graphite at temperatures in the range 60-88. K, was systematically investigated using a combination of several simulation techniques including: Grand Canonical ...
    • Flexible Adsorbents at High Pressure: Observations and Correlation of ZIF-7 Stepped Sorption Isotherms for Nitrogen, Argon, and Other Gases
      Yang, X.; Arami-Niya, Arash ; Xiao, G.; May, E.F. (2020)
      © 2020 American Chemical Society. Stepped adsorption isotherms with desorption hysteresis were measured for nitrogen, argon, ethane, carbon dioxide, and methane at pressures up to 17 MPa on zeolitic imidazolate framework-7 ...
    • On the existence of a hysteresis loop in open and closed end pores
      Fan, Chunyan; Do, D.; Nicholson, D. (2014)
      We have studied the adsorption of argon at 87 K in slit pores of finite length with a smooth graphitic potential, open at both ends or closed at one end. Simulations were carried out using conventional GCMC (grand canonical ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin University would like to pay our respect to the indigenous members of our community by acknowledging the traditional owners of the land on which the Perth Campus is located, the Wadjuk people of the Nyungar Nation; and on our Kalgoorlie Campus, the Wongutha people of the North-Eastern Goldfields.
    Watch our traditional Aboriginal welcome