Towards an accurate estimation of the isosteric heat of adsorption - A correlation with the potential theory
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- 作者：Ahmed A. Askalany<sup>asup><sup> ; sup><sup>ahmed_askalany3@yahoo.comsup> ; Bidyut B. Saha<sup>bsup><sup> ; sup><sup>csup>
- 关键词：Adsorption ; D-A equation ; Isosteric heat of adsorption ; Adsorbed phase volume
- 刊名：Journal of Colloid and Interface Science
- 出版年：2017
- 出版时间：15 March 2017
- 年：2017
- 卷：490
- 期：Complete
- 页码：59-63
- 全文大小：714 K
- 卷排序：490
文摘
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.