Solid-Liquid Equilibria for the Glycine-Alcohol-NaCl-H2O System
Solid-Liquid Equilibria for the Glycine-Alcohol-NaCl-H2O System
复制标题
甘氨酸-醇-NaCl-H2O 系统的固液平衡
DOI：
10.1021/acs.jced.7b00549
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发表时间：
2017
影响因子：
--
通讯作者：
Li ZB
中科院分区：
文献类型：
--
作者：
Ansari Ziaul Haque;Li Zhibao;Ansari Ziaul Haque;Li ZB
用动态法研究了甘氨酸-乙醇(乙醇/正丙醇)-氯化钠-水体系在283.15~333.15 K温度范围内的溶解度，考察了甘氨酸-乙醇(乙醇/正丙醇)-水、甘氨酸-乙醇-氯化钠(0.5、1.0、2.0mol.kg-1水)-水、甘氨酸-1-丙醇-氯化钠(0.5mol.kg-1水)-水和氯化钠-乙醇(乙醇/正丙醇)-甘氨酸(0.25mol.甘氨酸和氯化钠的溶解度随温度升高而增大，随醇浓度增大而减小。通过回归甘氨酸在甘氨酸-乙醇-氯化钠-水和甘氨酸-丙醇-水体系中的溶解度实验数据和文献数据，成功地建立了基于混合溶剂电解质(MSE)模型的甘氨酸化学模型。得到了新的中程和UNIQUAC相互作用参数。回归结果与实验值的平均绝对偏差小于7%。
An investigation of the solubility of glycine–alcohol (ethanol/1-propanol)–NaCl–H2O system was carried out by dynamic method over the temperature range from 283.15 to 333.15 K. The studied systems were glycine–alcohol (ethanol/1-propanol)–H2O, glycine–ethanol–NaCl (0.5, 1.0, 2.0 mol·kg–1water)–H2O, glycine–1-propanol–NaCl (0.5 mol·kg–1water)–H2O, and NaCl–alcohol (ethanol/1-propanol)–glycine (0.25 mol·kg–1water )–H2O. The solubilities of glycine and NaCl were found to increase with increasing temperature and decrease with increasing concentration of alcohols. A chemical model was successfully developed based on the mixed solvent electrolyte (MSE) model by regressing experimental and literature solubilities data of glycine in the glycine–ethanol–NaCl–H2O and glycine–1-propanol–H2O systems. New sets of middle range and UNIQUAC interaction parameters were obtained. The average absolute deviation between regressed and experimental values was found to be less than 7%.