Abstract
An alternative to the conventional ‘pore filling model’ for describing Gibbsian surface excess (GSE) isotherm from a liquid mixture on a porous adsorbent is proposed where the adsorbed phase volume is treated as a variable. The new model is tested using GSE isotherm data on various micro and mesoporous adsorbents. The adsorbed phase volume is found to be system specific but always less than the adsorbent pore volume, irrespective of the pore size.
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Sircar, S. Comments on the size of the adsorbed phase in porous adsorbents. Adsorption 23, 917–922 (2017). https://doi.org/10.1007/s10450-017-9914-1
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DOI: https://doi.org/10.1007/s10450-017-9914-1