Correlating and Predicting the Solubilities of Solid n-Alkanes in Supercritical Ethane Using Carnahan-Starling-van der Waals Model

被引：1
|
作者：
Li Hongru [1 ,2 ]
Li Shufen [3 ]
Shen Bingqian [1 ,2 ]
机构：
[1] Nankai Univ, Coll Pharm, State Key Lab Med Chem Biol, Tianjin 300071, Peoples R China
[2] Nankai Univ, Tianjin Key Lab Mol Drug Res, Tianjin 300071, Peoples R China
[3] Tianjin Univ, Sch Chem Engn & Technol, Key Lab Green Chem Technol, Minist Educ, Tianjin 300072, Peoples R China
来源：
CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2013年 / 21卷 / 12期
基金：
中国国家自然科学基金;
关键词：
supercritical ethane; solid n-alkanes; Carnahan-Starling-van der Waals model; solubility; EQUATION-OF-STATE; CUBIC EQUATION; EQUILIBRIA; PRESSURES; MIXTURES;
D O I：
10.1016/S1004-9541(13)60635-7
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The solubilities of some solid n-alkanes in supercritical ethane were correlated and predicted in this paper using the Carnahan-Starling-van der Waals model with a density-dependent parameter of a(12). At a given temperature, the linear fit of the parameter of a(12) and the density of the supercritical solvent was used for solubility correlation, resulting in an average absolute average relative deviation (AARD) of 8.68%, which was between the values of the semiempirical models and the other compressed gas models used in this article. In the linear fit of the parameter of a(12) and the density of the solvent, the regressed slope m and intercept n of the linear fit can be correlated with the carbon atom number of solid n-alkanes and then the solubilities of solid n-alkanes in supercritical ethane can be predicted with the intercept n and slope m. The average AARD in solubility prediction was 26.99%.
引用
收藏
页码：1360 / 1369
页数：10
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