摘要
我国青藏高原的盐湖卤水以富含硼、锂而闻名于世。其卤水大多属于 Li+ 、Na+、K+、Mg2 + ( Ca2 + ) /Cl-,CO2 -3 ( HCO-3 )、SO2 -4 ,borate- H2 O体系。它具有某些特殊的性质 ,被称之为“盐湖卤水体系”。它的研究在理论和实践上都有重要价值。我们对其热力学和相平衡进行了长期研究 ,积累了大量数据。用 Pitzer电解质溶液模型描述了这一体系的热力学和相平衡及其它物化性质。以 Li+ ,K+ ,Mg2 + /Cl-,SO2 -4 - H2 O体系 2 5℃时相平衡的预测为例 ,证明模型的可信性和用途。
The salt lakes on the Qinghai Xizang Plateau of China are famous for their high concentration of boron and lithium in brines. These brines mostly belong to the system Li +,Na +,K +, Mg 2+ (Ca 2+ )/Cl -,CO 2- 3(HCO - 3),SO 2- 4,borate H 2O(so called “Salt Lake Brine System”)which is different from the classic sea water system and others. The phase diagram and solution properties of the salt lake brine system are obviously important for comprehensive utilization of brines and for investigation of the formation and evolution of Li, B bearing salt lakes. Thermodynamics and phase equilibrium of the system are described with Pitzer ion interaction model of electrolyte solution. The prediction of phase equilibrium of the system Li +,K +,Mg 2+ /Cl -,SO 2- 4 H 2O at 25℃ is taken as an example to illustrate applicability and reliability of the model.
出处
《化学进展》
SCIE
CAS
CSCD
2000年第3期255-267,共13页
Progress in Chemistry
基金
国家自然科学基金
中国科学院资助
