CsNO_3-C_2H_5OH-H_2O三元体系在不同温度时的平衡溶解度及相关物性

The Equilibrium Solubility of CsNO_3 in CsNO_(3)-C_(2)H_(5)OH-H_(2)O Ternary System at Different Temperatures and Its Physical Properties

采用自制微型平衡溶解度测定装置 ,研究了CsNO3 C2 H5OH H2 O三元体系在 - 10、10、30和 5 0℃这4个温度下的液固相平衡 ,测定了液相的密度和折光率数据 ,利用“湿渣结线法”确定出 4个温度下平衡固相均为无水盐 ,绘制了该体系的等温相图。用经验关联方程lnY =A0 +A1x +A2 x2 +A3 x3 对溶解度、密度和折光率数据进行了拟合 ,拟合结果较好 ,同时给出了C2 H5OH对CsNO3

The equilibrium solubilities of CsNO_3 in CsNO_(3)-C_(2)H_(5)OH-H_(2)O ternary system at -10 ℃, 10 ℃, 30 ℃ and 50 ℃ have been studied using a self-made microdevice for solubility determination. The density and refractive index of the solutions were also determined. The equilibrium phase diagram is given and indicates that the equilibrium solid phase is CsNO_(3). The solubility, density and refractive index of the solution were correlated to the alcohol content according to the experimental equation ln Y=A_(0)+A_(1)x+A_(2)x^(2)+A_(3)x^(3).