Solubility, liquid¨Cliquid equilibrium and critical states for the quaternary system acetic acid¨Cethanol¨Cethyl acetate¨Cwater at 293.15 K

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• 作者：Maya Trofimova ; Maria Toikka ; Alexander Toikka  ; ;   ; ^{toikka@yandex.ru} ;   ; ^{alexander.toikka@chem.spbu.ru}
• 关键词：Liquid&ndash ; liquid equilibria ; Quaternary reacting systems ; Critical states
• 刊名：Fluid Phase Equilibria
• 出版年：2012
• 出版时间：15 January 2012
• 年：2012
• 卷：313
• 期：Complete
• 页码：46-51
• 全文大小：717 K

文摘

Solubility, critical states and liquid¨Cliquid equilibrium (LLE) data for the quaternary system acetic acid¨Cethanol¨Cethyl acetate¨Cwater and for the ternary sub-systems acetic acid¨Cethyl acetate¨Cwater and ethanol¨Cethyl acetate¨Cwater were obtained at 293.15 K and atmospheric pressure. Binodal curves, tie-lines and compositions of critical points were determined. In order to construct the binodal surface and critical curve of the quaternary system, three quaternary sectional planes with several ratios of acetic acid and ethanol were studied. Experimental LLE data were compared with the values calculated by UNIFAC model and it was found that the experimental and calculated data are in a good agreement.