Article

Adsorption

, Volume 19, Issue 1, pp 131-142

On the description of isotherms of CH4 and C2H4 adsorption on graphite from subcritical to supercritical conditions

Reconciliation between computer simulation and experimental data
  • Mus’ab Abdul RazakAffiliated withSchool of Chemical Engineering, University of Queensland
  • , D. D. DoAffiliated withSchool of Chemical Engineering, University of Queensland Email author 
  • , Toshihide HorikawaAffiliated withDepartment of Advanced Materials, Institute of Technology and Science, The University of Tokushima
  • , Keita TsujiAffiliated withBEL Japan, inc.
  • , D. NicholsonAffiliated withSchool of Chemical Engineering, University of Queensland

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Abstract

Different potential models for methane and ethylene are tested for their suitability for the description of bulk phase behavior, including coexistence, and adsorption on a graphite surface under sub- and super-critical conditions using GCMC simulation. Under sub-critical conditions, those intermolecular potential models that describe correctly the vapor–liquid equilibria were found to be adequate for the description of surface adsorption. These potential models can also give a good account of adsorption under supercritical conditions or near-critical conditions, provided the experimental data (in terms of excess) are correctly obtained with the reliably determined void volume as illustrated in this paper with methane adsorption.

Keywords

Adsorption Graphon Methane Ethylene Supercritical