Measurement and Correlation of Solubility of Calcium-L-lactate Pentahydrate in Ethanol plus Water and Acetone plus Water Systems

被引：17
作者：
Luan, Qinghua [1 ]
Wang, Yongli [1 ,2 ]
Wang, Guan [1 ]
Yang, Jingxiang [1 ]
Hao, Hongxun [1 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
[2] Coinnovat Ctr Chem & Chem Engn Tianjin, Tianjin 300072, Peoples R China
来源：
JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2014年 / 59卷 / 08期
基金：
中国国家自然科学基金;
关键词：
DIFFERENT PURE SOLVENTS; ENTHALPY-ENTROPY COMPENSATION; MAGNESIUM-L-LACTATE; SOLUTION THERMODYNAMICS; BINARY-MIXTURES; MODELS; ACID; CRYSTALLIZATION; GLUCONATE; HEPTANE;
D O I：
10.1021/je500416k
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The solubility of calcium-L-lactate pentahydrate (CLLP) in binary ethanol + water and acetone + water solvent mixtures was measured in the temperature range of 278.15 K to 313.15 K by using a synthetic method. The solubility of CLLP increases with increasing temperature, whereas it decreases 2 with the increase of the initial mole fraction of ethanol or acetone. The solubility data were correlated by using the modified Apelblat equation, the CNIBS/R-K equation, and the hybrid model, respectively. It was found that the modified Apelblat equation could give better correlation results both in ethanol aqueous solutions and in acetone aqueous solutions. The dissolution enthalpy, entropy, and Gibbs energy change of dissolution of CLLP in these solvent mixtures were obtained by using the modified van't Hoff equation.
引用
收藏
页码：2642 / 2648
页数：7
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