Solubility of diamines in supercritical carbon dioxide: Experimental determination and correlation

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• 作者：Kamel Khimeche ; Paolo Alessi ; Ireneo Kikic ; Abdallah Dahmani
• 关键词：Aromatics diamines ; Alkanediamines ; Solubility ; Supercritical carbon dioxide ; Peng– ; Robinson equation of state ; Density-based correlations
• 刊名：The Journal of Supercritical Fluids
• 出版年：2007
• 期刊代码：60_08968446
• 类别：ce
• 出版时间：May 2007
• 卷：41
• 期：1
• 页码：10-19
• 文件大小：670 K

摘要

In this work, the dynamic method is used for solubility measurements in supercritical carbon dioxide (Sc-CO₂) of some aromatic diamines (1,5-naphthalediamine, and 4,4′-diaminodiphenylmethane) and alkanediamines (1,10-decanediamine and 1,12-dodecanediamine), at pressures from 110 to 200 bar and temperatures from 313.15 to 333.15 K. Solubility in Sc-CO₂ cannot be reported for alkanediamines, since they interact with CO₂. The experimental data for aromatic diamines were well correlated by Peng–Robinson equation of state (PR-EOS), and density-based models (Chrastil and Mendez-Santiago–Teja models). The partial molar volumes of the aromatic diamines in the supercritical fluid (SCF) phase were also estimated, according to the theory developed by Kumar and Johnston.