The dilution enthalpies of L-prolinol in N,N-dimethylformamide aqueous solutions at T=298.15 K

被引：4
|
作者：
Fan, Dashuang [1 ]
Chen, Zhizhong [1 ]
Shen, Weiguo [1 ,2 ]
机构：
[1] Lanzhou Univ, Dept Chem, Lanzhou 730000, Gansu, Peoples R China
[2] E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 2013年 / 57卷
基金：
中国国家自然科学基金;
关键词：
L-Prolinol; N; N-dimethylformamide; Enthalpic pairwise interaction coefficients; Aggregation enthalpy; Hydrophobic interaction; ALPHA-AMINO ACIDS; WATER; TEMPERATURE; ASSOCIATION;
D O I：
10.1016/j.jct.2012.08.008
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Values of the enthalpy of dilution were measured for L-prolinol in pure water and N,N-dimethylformamide (DMF) aqueous solutions with various mass fractions of DMF at T = 298.15 K using a flow-mixing microcalorimeter. A pseudo phase equilibrium model was proposed to simplify the complex aggregation equilibrium and interpret the abnormality in the dilution enthalpy, which together with the McMillan-Mayer approach was used to fit the experimental data to obtain the enthalpic pairwise interaction coefficients and the molar aggregation enthalpies of L-prolinol in DMF aqueous solutions. The results are discussed in terms of the hydrophobic interaction and the interactions between the solvated solutes. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：506 / 509
页数：4
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