摘要
采用等温溶解平衡法,研究了Mn2+-NH4+-SO42--H2O三元体系在298 K下的相平衡及其平衡液相的主要物理化学性质(密度和pH值),绘制了溶解度平衡相图及物化性质组成图。结果表明:在三元体系Mn2+-NH4+-SO42--H2O相图中存在3条饱和曲线、2个共饱和点及3个纯盐结晶区。根据经验公式对平衡液相的密度进行了计算,计算值与实验测定结果的变化趋势相一致,但少数计算值的相对误差较大。
The solubility and physicochemical properties of solution, such as density and pH value, were studied in the ternary system of Mn^2＋-NH4^＋-SO4^2--H2O K by isothermal equilibrium method. According to the experimental data and calculated ones, the phase diagram and density-composition and pH-composition curves of the system were plotted. The results show that in the ternary system of Mn^2＋-NH4^＋-SO4^2--H2O, there exist three saturated curves, two co-saturated points and three purity salt crystal areas. The density values were calculated by the experimental formulas and were also measured. The calculated values are not all in agreement with the experimental results.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2005年第12期2066-2070,共5页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金资助项目(50444020)
国家高技术研究发展计划资助项目(2002AA649220)
关键词
水盐体系
溶解度
相平衡
salt-water system
solubility
phase equilibrium
