A Study on Phase Equilibria of the Quaternary System Li+, Mg2+//SO42-,B4O72--H2O at 288K
A Study on Phase Equilibria of the Quaternary System Li+, Mg2+//SO42-,B4O72--H2O at 288K
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发表时间：
2010
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通讯作者：
Sang Shi-hua;Li Ming;L. Heng;Sun Ming-liang
中科院分区：
文献类型：
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作者：
Sang Shi-hua;Li Ming;L. Heng;Sun Ming-liang
用等温溶液平衡法研究了Li+，Mg 2 +//SO 2 -4，B 4 O 2 -7-H 2 O四元互反体系在288 K下的相平衡，测定了四元互反体系的溶解度和密度，根据实验数据绘制了四元互反体系的平衡相图和含水量图，实验结果表明，该四元体系在288 K下有两个不变点F1和F2，五条单变曲线E1 F1，E2 F2，E3 F1，E4 F2和F1 F2，四个晶化区对应于Li 2B 4 O 7·3 H2O，Li 2SO 4· H2O、MgB 4 O 7·9 H2O和MgSO 4·7 H2O。
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.