摘要
本文测定了15℃(±0.01℃)时KCl-NaCl-MgCl_2-H_2O四元体系的溶解度数据,得出了完整的相图,补齐了现有文献所缺的溶解度数据.本文用从几个方向趋近的方法测定了共饱点数据,并用数理统计方法对数据进行了处理,结果可靠.用Pitzer方程式对该四元体系的溶解度数据进行了计算.计算所需的所有参数由所测的三元体系及部分四元体系数据用最小二乘法进行最优化,计算值与实验值吻合得很好.
Solubilities at 15℃ for KCl-NaCl-MgCl_2-H_2O quaternary system have been measured systematically and tabulated. The crystallization regions of KCl, NaCl, MgCl_2-6H_2O and KCl·MgCl_2-6H_2O have been found in the quaternary phase diagram. The Pitzer's equations for electrolyte solutions are used to prediet the system. All parameters used for calculation have been evaluated by the methol of leasb squares. Also, the solubilities at 15℃ for the system KCl-NaCl-MgCl_2-H_2O were calculated by means of the parameters. The calculated values agree with that measured within, experimental error.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1991年第2期128-134,共7页
Acta Chimica Sinica
