Supercritical fluid-solid phase equilibria calculations by cubic equations of state and empirical equations: Application to the palmitic acid plus carbon dioxide system

被引：18
作者：
Gordillo, D [1 ]
Pereyra, C [1 ]
de la Ossa, EJM [1 ]
机构：
[1] Univ Cadiz, Dept Chem Engn Food Technol & Environm Technol, Fac Sci, Puerto Real 11510, Cadiz, Spain
来源：
JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2004年 / 49卷 / 03期
关键词：
D O I：
10.1021/je0340598
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The solubility of palmitic acid in supercritical carbon dioxide has been determined experimentally in the pressure range (100 to 350) bar and the temperature range (35 to 55)degreesC. A cubic equation of state and an empirical equation have been used to correlate the solubility of this fatty acid in supercritical carbon dioxide. The first method, which is based on thermodynamic properties, uses two fitting parameters, the solid sublimation pressure and the binary interaction parameter, The sublimation pressure values obtained have been correlated using the Clapeyron equation. The interaction parameter has been correlated as a function of temperature. The empirical method is based on an equation that relates the solubility of the solid with the operation conditions. The empirical and equation of state methods provide good agreement between theory and experimental results for the solubility of palmitic acid in supercritical carbon dioxide.
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收藏
页码：435 / 438
页数：4
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