Effect of temperature on the solubility of 3-aminopyridine in binary ethanol plus toluene solvent mixtures
Effect of temperature on the solubility of 3-aminopyridine in binary ethanol plus toluene solvent mixtures
复制标题
DOI：
10.1016/j.fluid.2011.11.023
复制
发表时间：
2012-02-25
影响因子：
2.6
通讯作者：
Zhu, Jing
中科院分区：
文献类型：
--
作者：
Wei, Dongwei;Li, Hui;Zhu, Jing
采用静态分析方法，以5.00K的间隔测量了3-氨基吡啶在（乙醇+甲苯）混合溶剂中的溶解度，温度范围为283.15~323.15K。发现溶解度随温度变化的非线性关系。提出了非线性范特霍夫方程来关联实验数据。溶剂混合物中 3-氨基吡啶的表观摩尔焓由溶解度的温度依赖性测定。计算表观吉布斯能量和溶液表观熵值。 (C) 2011 Elsevier B.V. 保留所有权利。
The solubility of 3-aminopyridine in (ethanol + toluene) mixed solvents has been measured between 283.15 and 323.15 K at intervals of 5.00K by a static analytical method. Nonlinear dependences were found for the variation of solubility with temperature. The nonlinear van't Hoff equation was proposed for correlating the experimental data. The apparent molar enthalpies of 3-aminopyridine in the solvent mixtures were determined from the temperature dependence of the solubilities. The values for the apparent Gibbs energy and the apparent entropy of solution are calculated. (C) 2011 Elsevier B.V. All rights reserved.