摘要
采用等温溶解平衡法研究了两个三元体系PbCl_2-ZnCl_2-H_2O和CaCl_2-PbCl_2-H_2O在373 K时的相平衡,测定了平衡溶液的溶解度和密度,并根据溶解度数据和对应的平衡固相绘制了相图和密度-组成图,根据相图对单变量曲线和结晶区进行了讨论。研究发现,两个三元体系均为简单共饱和型,均无复盐和固溶体生成,有一个共饱点,两条单变量曲线,两个结晶区。平衡液相对应的固相由XRD确定,并对实验结果进行了简要的讨论。
In this work, the solubilities of the salt minerals and the densities of solution in two ternary systems of lead chloride-zinc chloride-water and calcium chloride-lead chloride-water were measured at 373 K by using an isothermal solution saturation method. Based on the determined equilibrium solubility data and the corresponding equilibrium solid phase, the phase diagrams and density diagrams of the two systems were plotted. According to the phase diagrams, univariant solubility curves and solid crystalline areas were discussed. The results showed that the two ternary systems were simple without any double salt or solid solution. The phase diagrams of two ternary systems were constituted of one invariant point, two univariant solubility curves and two solid crystalline phase regions. The solid phase was determined by the XRD. And the results of the experiment were simply discussed.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2016年第11期4552-4557,共6页
CIESC Journal
基金
国家自然科学基金项目(41373062)
四川省科技厅计划支撑项目(2014GZ0189)~~
关键词
相平衡
溶解度
氯化铅
氯化锌
氯化钙
equilibrium
solubility
lead chloride
zinc chloride
calcium chloride