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采用半微量相平衡方法研究了 Gd Cl3· 3H2 O - 18C6 - C2 H5 OH三元体系 (2 5℃ )的溶解度 ,测定了各饱和溶液的折光率 ,考察了相平衡过程中水的行为。绘制了体系的溶解度图与饱和溶液折光率曲线。发现了两种未见文献报道的配合物 :3Gd Cl3· 18C6· 9H2 O· C2 H5 OH与 Gd Cl3· 18C6· 3H2 O。前者为固液异成分溶解的配合物 ,后者为固液同成分溶解的配合物。制备了固态配合物 ,通过化学分析、IR、DTG、TG以及 DSC研究了配合物的组成与性质 ,由 DSC得到了配合物若干分解步骤的焓变。用热化学方法求得了固态配合物 Gd Cl3· 18C6· 3H2 O(s)的标准生成焓
The solubility of Gd Cl3 · 3H2 O - 18C6 - C2 H5 OH ternary system (25 ℃) was studied by semi - micro phase - equilibria method. The refractive index of each saturated solution was measured and the water behavior during phase equilibria was investigated. Draw the system solubility diagram and saturated solution refractive index curve. Two kinds of uncompleted complexes were found: 3Gd Cl3.18C6.9H2O. C2H5OH and GdCl3.18C6.3H2O. The former is a solid-liquid mixture of different components dissolved, which is the solid-liquid solution with the dissolution of the complex. The solid complexes were prepared. The chemical compositions, IR, DTG, TG and DSC were used to study the composition and properties of the complexes. The enthalpy change of some decomposition steps was obtained by DSC. The standard enthalpy of formation of the solid complex Gd Cl3 · 18C6 · 3H2 O (s) was obtained by thermochemistry