Local composition activity coefficient model for mixed-gas adsorption equilibria

被引：30

作者：

Kaur, Harnoor ^{[1
]}

Tun, Hla ^{[1
]}

Sees, Michael ^{[1
]}

Chen, Chau-Chyun ^{[1
]}

机构：

[1] Texas Tech Univ, Dept Chem Engn, Lubbock, TX 79409 USA

来源：

ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY | 2019年 / 25卷 / 05期

关键词：

Local composition activity coefficient model; Mixed-gas adsorption equilibria; Non-random two liquid theory; Adsorption NRTL activity coefficient model; POTENTIAL-THEORY; CARBON-MONOXIDE; BINARY-MIXTURES; ETHYLENE; PREDICTION; MICROPORES; PROPYLENE; ZEOLITES; NITROGEN; PROPANE;

D O I：

10.1007/s10450-019-00127-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Taking into consideration the adsorbate-adsorbent interactions, a novel activity coefficient model is derived from the non-random two-liquid theory for mixed-gas adsorption equilibria. In contrast with the conventional activity coefficient models developed for bulk liquids, the new model correctly predicts negative deviations from ideality for adsorbed phase mixtures including azeotropic behavior exhibited by selected gas-adsorbent systems. Requiring a single binary interaction parameter per adsorbate-adsorbate pair, the model successfully correlates wide varieties of binary adsorption isotherm data and it should be a powerful engineering thermodynamic tool in correlating and predicting mixed-gas adsorption equilibria.

引用

页码：951 / 964

页数：14

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