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用改进的半微量相平衡方法研究了Yb(NO_3)_3·3H_2O-Bl5C5-CH_3COCH_3三元体系在18℃时的溶解度,测定了各液相的折光率。结果指出只有一种化学计量的配合物(Yb(NO_3)_3·B15C5·3H_2O·2CH_3COCH_3)生成。分离、洗涤、浓硫酸干燥器中恒重后,经化学分析,确定配合物的组成为:Yb(NO_3)_3·B15C5·3H_2O·065CH_3COCH_3。用红外光谱、DTG、TG及DSC等对配合物进行了研究。测得配合物的脱溶剂与热分解的热焓值(△H)。按照Kissinger法,求得配合物热分解过程的表现活化能。
The solubility of Yb (NO_3) _3 · 3H_2O-Bl5C5-CH_3COCH_3 ternary system at 18 ℃ was studied by the improved semi-micro phase equilibrium method. The refractive index of each liquid phase was measured. The results indicate that only one stoichiometric complex (Yb (NO_3) _3 · B15C5 · 3H_2O · 2CH_3COCH_3) is generated. After separation, washing and constant weight sulfuric acid dryer, the chemical composition of the complex was determined as follows: Yb (NO_3) _3 B15C5 3H_2O · 065CH_3COCH_3. The complexes were studied by IR, DTG, TG and DSC. The enthalpy value (△ H) of the desolvent and thermal decomposition of the complex was measured. According to the Kissinger method, the activation energy of the complex was calculated.