摘要
本文应用Pitzer电解质溶液理论建立了适合于CaO-P_2O_5-H_2O和MgO-P_2O_5-H_2O体系的活度系数关系式。通过对活度系数的关联,得到了这二个体系中的粒子相互作用参数值。计算了CaO-P_2O_5-H_2O和MgO-P_2O_5-H_2O体系在25℃时的相平衡数据。取得了较好的结果。
Based on Pitzer's electrolytic solution theory, solid-liquid phase equilibrium of CaO-P_2O_5-H_2O and MgO-P_2O_5-H_2O ternary systems were studied. According to thermodynamic excessive Gibb free energy and Pitzer's electrolytic solution theory, the activity coefficient of cations, anions and the molecular form species was derived. The interaction parameters present in the activity coefficient equations were found by experimental data fitting, the obrained activity coefficient equations and correlated interaction paramenters can be used to calculate the solid-liquid phase equlibrium of the systems, the results showed the good agreement with the experimental value.
出处
《高校化学工程学报》
EI
CAS
CSCD
1991年第1期17-23,共7页
Journal of Chemical Engineering of Chinese Universities
