Phase equilibria in ternary systems PbCl2-ZnCl2-H2O and CaCl2-PbCl2-H2O at 373 K

doi:10.11949/j.issn.0438-1157.20160932

CIESC Journal ›› 2016, Vol. 67 ›› Issue (11): 4552-4557.DOI: 10.11949/j.issn.0438-1157.20160932

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Phase equilibria in ternary systems PbCl₂-ZnCl₂-H₂O and CaCl₂-PbCl₂-H₂O at 373 K

ZHANG Xueping¹, CUI Ruizhi¹, LIU Qian¹, SANG Shihua^1,2

1 College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, China;
2 Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions, Chengdu 610059, Sichuan, China

Received:2016-07-05 Revised:2016-07-26 Online:2016-11-05 Published:2016-11-05
Supported by:
supported by the National Natural Science Foundation of China (41373062).

PbCl₂-ZnCl₂-H₂O和CaCl₂-PbCl₂-H₂O三元体系373K相平衡

张学平¹, 崔瑞芝¹, 刘乾¹, 桑世华^1,2

1 成都理工大学材料与化学化工学院, 四川成都 610059;
2 矿产资源化学四川省高校重点实验室, 四川成都 610059

通讯作者: 桑世华,sangsh@cudt.edu.cn
基金资助:
国家自然科学基金项目（41373062）；四川省科技厅计划支撑项目（2014GZ0189）。

Abstract

Abstract:

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.

Key words: equilibrium, solubility, lead chloride, zinc chloride, calcium chloride

摘要：

采用等温溶解平衡法研究了两个三元体系PbCl₂-ZnCl₂-H₂O和CaCl₂-PbCl₂-H₂O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。

关键词: 相平衡, 溶解度, 氯化铅, 氯化锌, 氯化钙

CLC Number:

O642

ZHANG Xueping, CUI Ruizhi, LIU Qian, SANG Shihua. Phase equilibria in ternary systems PbCl₂-ZnCl₂-H₂O and CaCl₂-PbCl₂-H₂O at 373 K[J]. CIESC Journal, 2016, 67(11): 4552-4557.

张学平, 崔瑞芝, 刘乾, 桑世华. PbCl₂-ZnCl₂-H₂O和CaCl₂-PbCl₂-H₂O三元体系373K相平衡[J]. 化工学报, 2016, 67(11): 4552-4557.

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Phase equilibria in ternary systems PbCl₂-ZnCl₂-H₂O and CaCl₂-PbCl₂-H₂O at 373 K

PbCl₂-ZnCl₂-H₂O和CaCl₂-PbCl₂-H₂O三元体系373K相平衡

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