高校化学工程学报2011，Vol.25Issue(3)：381-384,4.
K+,Mg2+//SO42-,B4O72--H2O四元体系288K时的固液相平衡
Solid-Liquid Equilibria of the Quaternary System K+, Mg2+∥SO42-, B402-7- H2O at 288 K
摘要
Abstract
Solid-Liquid equilibria of the reciprocal quaternary system K+, Mg2+∥SO2-4, B402-7 - H20 at 288 K were studied by isothermal solution equilibrium method. Solubilities and densities of each single salts in the solution 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 double salt K2SO4· MgSO4·4H20 forms in the quaternary system K+, Mg2+∥SO2-4, B402-7-H20 at 288 K. The phase diagram of the quaternary system at 288 K has three invariant points F1, F2 and F3, seven univariant curves E1-F1, E2-F1, E4-F3, E5-F3, E3-F2, F1-F2 and F2-F3, and five fields of crystallization [K2SO4·MgSO4·6H2O, K2B4O7·4H20, K2SO4, MgSO4·7H20 and MgB4O7·9H20].关键词
相平衡/硫酸盐/硼酸盐/溶解度Key words
phase equilibrium/sulfate/borate/solubility分类
化学化工引用本文复制引用
桑世华,彭江..K+,Mg2+//SO42-,B4O72--H2O四元体系288K时的固液相平衡[J].高校化学工程学报,2011,25(3):381-384,4.基金项目
教育部新世纪优秀人才资助计划(NCET-07-0125) （NCET-07-0125）
国家自然科学基金项目(40973047)和四川省杰出青年学科带头人培养基金资助计划(08ZQ026-017)联合资助. （40973047）
