Solubility of the Ternary System LiCl + NH4Cl + H2O
Solubility of the Ternary System LiCl + NH4Cl + H2O
复制标题
DOI：
10.1021/je101056t
复制
发表时间：
2011-02
影响因子：
--
通讯作者：
Haitang Ouyang;D. Zeng;Hongyan Zhou;Haijun Han;Yan Yao
中科院分区：
文献类型：
--
作者：
Haitang Ouyang;D. Zeng;Hongyan Zhou;Haijun Han;Yan Yao
通过等温法，在 T = (273.15、298.15 和 323.15) K 时详细测定了三元体系 (LiCl + NH4Cl + H2O) 的溶解度等温线。平衡相图中，273.15 K 处有两个溶解度分支，分别对应固相 LiCl·2H2O 和 NH4Cl。 273.15 K 处的不变点组成为：LiCl 的 w = 0.401、NH4Cl 的 w = 0.024 和 H2O 的 w = 0.575。然而，在(298.15和323.15)K处存在三个溶解度分支，分别对应于固相LiCl·H2O、NH4Cl和新发现的固溶体相(NH4Cl)x(LiCl·H2O)1−x。选择 Pitzer−Simonson−Clegg 热力学模型来表示该系统的热力学性质。我们的溶解度数据与其他研究小组的水活度之间的热力学一致性表明这些相关的实验数据是可靠的。
Solubility isotherms of the ternary system (LiCl + NH4Cl + H2O) were elaborately determined at T = (273.15, 298.15, and 323.15) K by an isothermal method. In the equilibrium phase diagram, there are two solubility branches at 273.15 K, corresponding to the solid phase LiCl·2H2O and NH4Cl. The invariant point composition at 273.15 K is w = 0.401 for LiCl, w = 0.024 for NH4Cl, and w = 0.575 for H2O. However, there are three solubility branches at (298.15 and 323.15) K, corresponding to the solid phase LiCl·H2O, NH4Cl, and a new found solid solution phase (NH4Cl)x(LiCl·H2O)1−x. A Pitzer−Simonson−Clegg thermodynamic model was selected to represent the thermodynamic properties of this system. Thermodynamic consistence between our solubility data and water activity from other research groups shows that these concerned experimental data are reliable.