摘要
采用等温溶解平衡法研究了288K时Li+,Mg2+//SO42-,B4O72--H2O四元体系的固液相平衡关系,测定了该四元体系在288K时平衡液相的溶解度和密度。依据实验测定的平衡溶解度数据及对应的平衡固相,绘制了该四元体系的平衡相图及密度组成图。研究结果表明:交互四元体系Li+,Mg2+//SO42-,B4O27--H2O288K时平衡相图中有2个共饱点,5条单变量曲线,4个结晶区对应的平衡固相分别为Li2B4O7.3H2O,Li2SO4.H2O,MgB4O7.9H2O和MgSO4.7H2O。
Phase equilibria of the reciprocal quaternary system Li＋,Mg2＋//SO2-4,B4O2-7-H2O at 288K were studied by isothermal solution equilibrium method.Solubilities and densities of the reciprocal quaternary system were determined experimentally.According to the experimental data,the equilibrium phase diagram and water content diagram of the quaternary system were plotted,respectively.The experimental results show that the quaternary system at 288 K has two invariant points F1 and F2,five univariant curves E1F1,E2F2,E3F1,E4F2,and F1F2,and four fields of crystallization corresponding to Li2B4O7 · 3H2O,Li2SO4 · H2O,MgB4O7 · 9H2O and MgSO4 · 7H2O.
出处
《地质学报》
EI
CAS
CSCD
北大核心
2010年第11期1704-1707,共4页
Acta Geologica Sinica
基金
教育部新世纪优秀人才资助计划(编号NCET-07-0125)
国家自然科学基金项目(编号40973047)
四川省杰出青年学科带头人培养基金资助计划(编号08ZQ026-017)资助的成果
关键词
相平衡
硫酸盐
硼酸盐
溶解度
Phase equilibrium
Sulfate
Borate
Solubility
