Solubility Model of Solid Solute in Supercritical Fluid Solvent Based on UNIFAC

被引：5
|
作者：
Zhao, Yueqiang [1 ]
Liu, Weiwei [1 ]
Wu, Zhengming [1 ]
机构：
[1] Huaihai Inst Technol, Dept Chem Engn, Jiangsu Key Lab Marine Biotechnol, Lianyungang 222005, Jiangsu, Peoples R China
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2010年 / 49卷 / 12期
基金：
中国国家自然科学基金;
关键词：
CARBON-DIOXIDE; HYDROCARBON SOLIDS; EQUILIBRIA; MIXTURES; ETHYLENE; BINARY;
D O I：
10.1021/ie100656v
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A semitheoretical model based on UNIFAC was proposed to correlate the solubility of solid solute in supercritical fluid (SF) solvent simply and reliably, which does not need critical parameters for solid solutes. The interaction parameters a(ij) between the SF solvents (such as carbon dioxide, ethylene, and ethane) and the functional groups of solutes were regressed, which is compatible with the vapor-liquid equilibrium (VLE) UNIFAC group-interaction parameters. More efforts and experimental data are needed to obtain a sufficiently large number of interaction parameters for extensive applications. The estimated power exponent of reduced density seems identical for the same solid solute in SF cosolvent homologues. This model could predict the solubility of a solid solute in supercritical CO(2) with cosolvents successfully.
引用
收藏
页码：5952 / 5957
页数：6
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