Er(NO_3)_3-TBP-n-C_6H_(14)体系平衡常数的计算

The Calculation of thermodynamic Equilibrium Constant in Er(NO_3)_3-TBP-n-C_6H_(14)

用热力学溶液理论研究了中性磷革取刺与稀土硝酸盐体系平衡常数计算模型，实验结果经与Scatchard-Hildebrand模型关联，并经处理，得到该萃取反应的热力学平衡常数（K=0.123～0.205）及萃合物的活度系数。

In this paper, the thermodynamic equilibrium constant of neutral phosphoric extractant and rare-earth metal system was studied by solution theory of thermodynamics. The experimental data were used to correlate and solved on computer, the results showed that thermodynamic equilibrium constant K is between 0.123～0.205 and the activity coefficients of the components are achieved.Keywrods: Equilibrium constant Activity Coneffiecient TBP Rare-earth metal