Volumetric and Viscometric Studies of Amino Acids in Mannitol Aqueous Solutions at T = (293.15 to 323.15) K

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• 作者：Xiaofen Ren ; Chunying Zhu ; Youguang Ma
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2015
• 出版时间：June 11, 2015
• 年：2015
• 卷：60
• 期：6
• 页码：1787-1802
• 全文大小：360K
• ISSN：1520-5134

文摘

Densities and viscosities of glycine, mallcaps">l-alanine, mallcaps">l-valine, mallcaps">l-threonine, and mallcaps">l-arginine in aqueous solutions of (0.0, 0.2, 0.4, 0.6, 0.8, and 1.0) mol路kg^鈥? mannitol have been measured in the temperature range of (293.15 to 323.15) K under atmospheric pressure; then the measured densities and viscosities of experimental systems were correlated. These data were further used to calculate the apparent molar volumes (V_蠁), the limiting partial molar volumes (V_蠁⁰), the limiting partial molar volumes of transfer (螖_trV_蠁⁰), the viscosity B-coefficients, and the free energies of activation per mole of solvent (螖渭₁^{0鈮?/sup>) and solute (螖渭₂0鈮?/sup>). The results were interpreted through solute鈥搒olute interaction and solute鈥搒olvent interaction on the basis of the cosphere overlap model and transition state theory.}