【摘要】 利用半微量相平衡方法,研究了Y（NO₃）3·3H₂O-B15C5-CH₃COCH₃三元体系在18℃时的溶解度。结果指出:该体系的溶解度曲线由两支组成,其中较长的一支与盐、醚摩尔比为1:1的络合物Y（NO₃）₃·B15C5.3H₂O·2·5CH₄COCH₃的固相相对应。未发现其他化学计量络合物存在。无论是在液相,还是在固相,在平衡过程中,水与硝酸钇的摩尔比总是3:1。对所生成的固态络合物组成,通过红外光谱和化学分析做了进一步的考查。研究了它们与后处理条件的关系。更多还原

【Abstract】 The solubility of the ternary system, Y（NO₃）₃·3H₂O-B15C5-CH₃ COCH₃at 18℃ has been determined by a phase equilibrium method. The resultsindicated that there are two solubility curves for the system, the long onecorrespounds with the solid phase of the complex,Y（NO₃）₃·B15C5·3H₂O 2.5CH₃COCH₃ and the short one with that of B15C5. There was a failure toachieve other complex species with another Y/crown ratios. The behavior of water for this system in equilibrium has been exami-ned. The results are: the mole ratio,（H₂O/Y（NO₃）₃）, no matter whether it isin liquid phase or solid phase, is always 3: 1. The composition of the isolated complex have been examined by chemicalanaiysis, infrared spectra and thermogravimetric analysis,as well as the rela-tion between the composition of complexes and aftertreament conditions. A relatively stable complex,Y（NO₃）₃. B15C5·3H₂ O·0.65CH₃COCH₃ wasobtained.更多还原