摘要
采用半微量相平衡方法研究了三元体系Nd（NO3）3·3H2O-18C6-CH3CN在303.15K的溶解度，测定了饱和溶液的折光率。该体系中仅生成一种化学计量的配合物Nd（NO3）3·18C6·3H2O，与溶解度曲线较长的一支相对应，其较短的一支与冠醚18C6的固相相对应；折光率曲线与溶解度曲线是对应的．本实验考察了相平衡过程中水的行为，分离了固态配合物，用化学分析，IR、DTG及TG研究了配合物的组成与性质。
In this paper, the solubilities of ternary system Nd (NO3), 3H2O - 18C6 - CH3CN, at 303.15K have been investigated by the semimicro method for the study of phase equilibrium. The refractive indexes for satuated solutions at 303. 15K have been determined for this system. The results indicated that there is only one stoichiometry complex formed in the ternary system. The long solubility carve corresponds with the solid phase of the complex Nd(NO3),18C6·3H2O ;the short one with solid phase of the 18C6. The curve of refractive indexes for saturated solutions Correspond with the two solubility curves. The behavior of water for this system in equilibrium has been examined. We have isolated the complex formed in this solvent. The composition and properties of this complex have been examined by chemical analysis, infrared spectra and thermoanalysis.
出处
《内蒙古石油化工》
CAS
1997年第4期7-11,共5页
Inner Mongolia Petrochemical Industry
关键词
钕
硝酸钕
配合物
相平衡
Phase equilibrium complex rare earth Crown ether
