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Solid–Liquid Equilibrium for Binary Systems Containing Carboxylic Acids and Acetic Anhydride Obtained by Differential Scanning Calorimetry
Journal of Chemical & Engineering Data ( IF 2.298 ) Pub Date : 2020-01-07 , DOI: 10.1021/acs.jced.9b00711
Jinghao He; Dejun Dong; Fan Yang; Lihui Sun; Xing Yu; Zhanping Yang; Xuedong Zhu; Yinchun Liang

In the present study, the solid–liquid phase diagrams of four systems acetic acid + acetic anhydride, propionic acid + acetic anhydride, butyric acid + acetic anhydride, and pentanoic acid + acetic anhydride were determined by differential scanning calorimetry at atmospheric pressure. The experimental results illustrated that these systems showed a eutectic behavior. The experimental data were compared with predicted data acquired by solving the phase equilibrium equations using an algorithm. The liquid-phase activity coefficients were calculated by the Wilson and nonrandom two-liquid activity coefficient models. The results show that the approaches used for the calculated system equilibrium was capable to accurately describe the eutectic solid–liquid phase diagrams of the above-mentioned systems.
更新日期:2020-01-08

 

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