摘要
采用改进的半微量相平衡方法研究了Y(ClO_4)_3·3H_20-18C6-C_2H_5OH三元体系在15℃时的溶解度,测定了各饱和溶液的折光率,考查了相平衡过程中水的行为。结果表明,无论在液相还是在固相中,每摩尔高氯酸钇均带有三摩尔水。
In this paper, the Solubility of ternary, system, Y(ClO_4)_3.3H_2O-18C6-C_2H_5OH, at 15℃ have been investigated by a selfdeveloped semimicro method for the study of phase equilibrium results indicate that there are four kinds of coordination compounds formed in this ternary system at 15℃. The compositions of these coordination compounds are 4Y(ClO_4)_3·3(18C6)·12H_2O·10C_2H_5OH, Y(ClO_4)_3·18C6·3H_2O·3.5C_2H_5OH, 2Y(ClO_4)_3·3(18C6)·6H_2O·3C_2H_5OH and Y(ClO_4)_3·2(18C6)·3H_2O.C_2H_5OH, respectively. Behaviour of water in this system during equilibrium has been examined. Results show that the mole ratio H_2O/Y(ClO_4)_3 is always equal to 3:1, no matter which phase it is.The three coordination compounds have been isolated from organic solventC_2H_5OH. The infrared spectra were recorded on an IR-440 spectrophotometer. It provides definite evindence that the ytterium ion is coordinated with the crown ether 18C6.
出处
《中国稀土学报》
CAS
CSCD
北大核心
1989年第3期10-15,共6页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金
