SIOC English
化学学报
高级检索

化学学报 ›› 2001, Vol. 59 ›› Issue (1): 73-77. 上一篇    下一篇

研究论文

ZnSO~4-Thr-H~2O体系(25℃)的相平衡及配合物的合 成与性质

高胜利;张晓玉;杨旭武;史启祯   

  1. 西北大学化学系.西安(710069)
  • 发布日期:2001-01-15

Synthesis, properties and phase equilibrium of ZnSO~4-Thr-H~2O system (25℃)

Gao Shengli;Zhang Xiaoyu;Yang Xuwu;Shi Qizhen   

  1. Northwest Univ, Dept Chem.Xian(710069)
  • Published:2001-01-15

PDF

535

用半微量相平衡方法研究了硫酸锌-苏氨酸-水体系在25℃及全浓度范围内的溶度性质，绘制了体系的相图和饱和溶液折光率曲线，体系中不存在新化合物。在水-丙酮混合溶剂中合成了未见文献报道的Zn(Thr)SO~4·H~2O三元固态化合物，通过化学分析、元素分析、IR，XRD，XPS和TG-DTG等对其组成、结构及热稳定性进行了研究。用精密转动弹热量计测定了配合物的标准燃烧能(-11848.76±17.76)J·g^-^1，求得它的标准燃烧焓(-3534.82±5.30)kJ·mol^-^1，标准生成焓(-256.37±5.69)kJ·mol^-^1.

关键词: 硫酸锌, 水, 相平衡, 苏氨酸, 生成焓

The solubility of ZnSO~4-Thr-H~2O system at 25℃ in the entire concentration range has been investigated by phase equilibrium method. The corresponding phase diagram and refractive index diagram have been constructed. The results indicate that system is a simple one, which does not have any new compounds. The compound of Zn(Thr)SO~4· H~2O, which is not reported in the literature, has been prepared in acetone-water mixture solvent. The compound is characterized by IR spectra, XRD, XPS and TG-DTG, as well as chemical and elemental analyses. The constant volume combustion energy of the complex, △~c~, ~c~o~o~rE, has been determined by a precision rotating bomb calorimeter at 298.15K. The standard enthalpy of combustion, △~c~, ~c~o~o~rH^θ, and standard enthalpy of formation, △~f~,~c~o~o~rH^θ, are calculated for the complex.

Key words: ZINC SULFATE, WATER, PHASE EQUILIBRIUM, THREONINE, ENTHALPY OF FORMATION

中图分类号: