Non-random two-liquid modelling of switchable-hydrophilicity solvent systems: N,N-Dimethylcyclohexanamine, water, and toluene

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• 作者：Jesse R. Vanderveen^a ; Roberto I. Canales^b ; Yi Quan^a ; Courtney B. Chalifoux^a ; Mark A. Stadtherr^b ; ^{markst@nd.edu" class="auth_mail" title="E-mail the corresponding author} ; Joan F. Brennecke^b ; ^{jfb@nd.edu" class="auth_mail" title="E-mail the corresponding author} ; Philip G. Jessop^a ; ^{jessop@queensu.ca" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Switchable-hydrophilicity solvents ; Non-random two-liquid model ; Liquid&ndash ; liquid equilibrium ; Carbon dioxide ; Phase behaviour
• 刊名：Fluid Phase Equilibria
• 出版年：2016
• 出版时间：15 February 2016
• 年：2016
• 卷：409
• 期：Complete
• 页码：150-156
• 全文大小：551 K

文摘

Liquid–liquid phase equilibrium data for the ternary system of (water + N,N-dimethylcyclohexanamine + toluene) and the quaternary system of (water + N,N-dimethylcyclohexanamine + toluene + N,N-dimethylcyclohexanammonium bicarbonate) were collected at 303.15 K and atmospheric pressure. The experimental data for the ternary system were correlated by the Othmer-Tobias equation and Hand equation. The experimental data were compared with the results fit to the non-random two-liquid model. The distribution coefficients and separation factor values were evaluated for the immiscibility regions and their implications for switchable-hydrophilicity solvent based separations are discussed.