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Phase Equilibria of the Ternary Systems ((NH4)2SO4–MNSO4–H2O) and ((NH4)2SO4–MGSO4–H2O) at 303.15 K
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-03-03 , DOI: 10.1021/acs.jced.9b00937
Yujia Zhang 1 , Youxiang Bai 1 , Yongsheng Ren 1
Affiliation  

In this work, the solid–liquid phase equilibria and physicochemical properties of ((NH4)2SO4–MnSO4–H2O) and ((NH4)2SO4–MgSO4–H2O) systems at T = 303.15 K have been determined by the isothermal solution saturation method. Also we used the Schreinemaker wet residue method to determine the equilibria solid phase. The experimental results show that there are two double-salts, (NH4)2Mn(SO4)2·6H2O and (NH4)2Mg(SO4)2·6H2O, in both systems. At the same time, there are two common points ((MnSO4·H2O+(NH4)2Mn(SO4)2·6H2O) and ((NH4)2SO4+(NH4)2Mn(SO4)2·6H2O) in the (NH4)2SO4–MnSO4–H2O system, (MgSO4·6H2O+(NH4)2Mg(SO4)2·6H2O) and ((NH4)2SO4+(NH4)2Mg(SO4)2·6H2O) in the (NH4)2Mg(SO4)2·6H2O system) and five crystalline regions. The density and refractive index of the two systems are calculated and compared with the experimental values. According to means of the through and intermediate translation techniques together, we predicted the phase diagram of the (NH4)2SO4–MnSO4–MgSO4–H2O quaternion system. Thus, the study of solid–liquid phase equilibrium at 303.15 K is of great theoretical significance to the crystallization process of manganese sulfate.

中文翻译:

三元体系((NH 42 SO 4 –MNSO 4 –H 2 O)和((NH 42 SO 4 –MGSO 4 –H 2 O)在303.15 K时的相平衡

在这项工作中,((NH 42 SO 4 -MnSO 4 -H 2 O)和((NH 42 SO 4 -MgSO 4 -H 2 O)系统在T时的固液相平衡和理化性质通过等温溶液饱和法确定了303.15K。同样,我们使用Schreinemaker湿法残留法确定平衡固相。实验结果表明,存在两种双盐:(NH 42 Mn(SO 42 ·6H 2 O和(NH 42的Mg(SO 42 ·6H 2 O,在两个系统中。同时有两个共同点((MnSO 4 ·H 2 O +(NH 42 Mn(SO 42 ·6H 2 O)和((NH 42 SO 4 +(NH 42 Mn (NH 42 SO 4 -MnSO 4 -H 2 O系统中的(SO 42 ·6H 2 O)(MgSO 4 ·6H 2O +(NH 42的Mg(SO 42 ·6H 2 O)和((NH 42 SO 4 +(NH 42的Mg(SO 42 ·6H 2 O)在(NH 42 Mg(SO 42 ·6H 2 O体系)和五个晶体区域。计算两个系统的密度和折射率,并将其与实验值进行比较。根据直通翻译和中间翻译技术的手段,我们预测了(NH 42 SO 4 -MnSO 4 -MgSO 4 -H 2 O四元离子体系。因此,研究303.15 K时的固液相平衡对硫酸锰的结晶过程具有重要的理论意义。
更新日期:2020-04-24
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