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

doi:10.1016/S1004-9541(13)60635-7

Chin.J.Chem.Eng. ›› 2013, Vol. 21 ›› Issue (12): 1360-1369.DOI: 10.1016/S1004-9541(13)60635-7

• CHEMICAL ENGINEERING THERMODYNAMICS • Previous Articles Next Articles

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

LI Hongru¹, LI Shufen², SHEN Bingqian¹

1 College of Pharmacy, State Key Laboratory of Medicinal Chemical Biology and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China;
2 Key Laboratory for Green Chemical Technologies of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Received:2012-12-26 Revised:2013-03-04 Online:2013-12-27 Published:2013-12-28
Supported by:
Supported by the National Natural Science Foundation of China (21206077).

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

李红茹¹, 李淑芬², 沈炳谦¹

1 College of Pharmacy, State Key Laboratory of Medicinal Chemical Biology and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China;
2 Key Laboratory for Green Chemical Technologies of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

通讯作者: LI Hongru
基金资助:
Supported by the National Natural Science Foundation of China (21206077).

Abstract

Abstract: 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 a₁₂. At a given temperature, the linear fit of the parameter of a₁₂ 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 a₁₂ 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%.

Key words: supercritical ethane, solid n-alkanes, Carnahan-Starling-van der Waals model, solubility

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 a₁₂. At a given temperature, the linear fit of the parameter of a₁₂ 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 a₁₂ 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%.

关键词: supercritical ethane, solid n-alkanes, Carnahan-Starling-van der Waals model, solubility

LI Hongru, LI Shufen, SHEN Bingqian. Correlating and Predicting the Solubilities of Solid n-Alkanes in Supercritical Ethane Using Carnahan-Starling-van der Waals Model[J]. Chin.J.Chem.Eng., 2013, 21(12): 1360-1369.

李红茹, 李淑芬, 沈炳谦. Correlating and Predicting the Solubilities of Solid n-Alkanes in Supercritical Ethane Using Carnahan-Starling-van der Waals Model[J]. Chinese Journal of Chemical Engineering, 2013, 21(12): 1360-1369.

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

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

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