Towards an accurate estimation of the isosteric heat of adsorption – A correlation with the potential theory

Ahmed A. Askalany; Bidyut B. Saha

doi:10.1016/j.jcis.2016.11.040

Towards an accurate estimation of the isosteric heat of adsorption – A correlation with the potential theory

Ahmed A. Askalany, Bidyut B. Saha

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

Accurate estimation of the isosteric heat of adsorption is mandatory for a good modeling of adsorption processes. In this paper a thermodynamic formalism on adsorbed phase volume which is a function of adsorption pressure and temperature has been proposed for the precise estimation of the isosteric heat of adsorption. The estimated isosteric heat of adsorption using the new correlation has been compared with measured values of prudently selected several adsorbent-refrigerant pairs from open literature. Results showed that the proposed isosteric heat of adsorption correlation fits the experimentally measured values better than the Clausius-Clapeyron equation.

Original language	English
Pages (from-to)	59-63
Number of pages	5
Journal	Journal of Colloid And Interface Science
Volume	490
DOIs	https://doi.org/10.1016/j.jcis.2016.11.040
Publication status	Published - Mar 15 2017

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
Surfaces, Coatings and Films
Colloid and Surface Chemistry

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10.1016/j.jcis.2016.11.040

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AB - Accurate estimation of the isosteric heat of adsorption is mandatory for a good modeling of adsorption processes. In this paper a thermodynamic formalism on adsorbed phase volume which is a function of adsorption pressure and temperature has been proposed for the precise estimation of the isosteric heat of adsorption. The estimated isosteric heat of adsorption using the new correlation has been compared with measured values of prudently selected several adsorbent-refrigerant pairs from open literature. Results showed that the proposed isosteric heat of adsorption correlation fits the experimentally measured values better than the Clausius-Clapeyron equation.

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Towards an accurate estimation of the isosteric heat of adsorption – A correlation with the potential theory

Abstract

All Science Journal Classification (ASJC) codes

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