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用改进了的半微量相平衡方法研究了Pr(NO_3)_3·4H_2O-18C6-CH_5COCH_3三元体系在18℃时的溶解度,所得相图实际上仅由一条溶解度曲线组成,与它相对应的固相组成为Pr(No_3)_3·18C6·4H_2O。用不同方法对配合物中水的稳定性做了考查。借助于偏光显微观察等手段考查了配合物的差热与热重分析过程,提出了配合物的分解机理。
The solubility of Pr (NO_3) _3 · 4H_2O-18C6-CH_5COCH_3 ternary system at 18 ℃ has been studied by a modified semi-micro phase-equilibria method. The obtained phase diagram consists of only one solubility curve and the corresponding solid The phase composition is Pr (No_3) _3 · 18C6 · 4H_2O. The stability of water in the complex was examined by different methods. By means of polarized light microscopy and other means to examine the differential thermal and thermal gravimetric analysis of the complex, the decomposition mechanism of the complex was proposed.