Isopiestic measurements of water activities and thermodynamic modeling for CuCl2-MCl2-H2O (M = Mg, Ca) ternary system at t=298.15 K
文献类型：期刊论文
| 作者 | Guo, Lijiang2; Zhou, Quanbao1; Zeng, Dewen3 |
| 刊名 | FLUID PHASE EQUILIBRIA
 |
| 出版日期 | 2021-05-01 |
| 卷号 | 535页码:18 |
| 关键词 | Water activity Solubility Thermodynamic model Copper chloride Magnesium chloride Calcium chloride |
| ISSN号 | 0378-3812 |
| DOI | 10.1016/j.fluid.2020.112933 |
| 英文摘要 | Water activities of the CuCl2-MCl2-H2O (M= Mg, Ca) ternary systems and their sub-binary systems have been measured by the isopiestic method at 298.15K. The maximum concentrations of the CuCl2-H2O, MgCl2-H2O and CaCl2-H2O binary systems are 5.28 mohkg(-1), 5.25 mohkg -1 and 6.61 mol.kg(-1), respectively. The concentrations of mixture solution rang from 0.91 mol.kg(-1) to 5.69 mol.kg(-1) for CuCl2-MgCl2-H2O system, and 1.29 mol.kg(-1) to 6.87 mol,kg(-1) for CuCl2-CaCl2-H2O system. The measured water activities of the sub-binary systems are consistent with the experimental results reported in literature. The measured equal water activities in the ternary systems strongly deviate from the Zdanovskii-Stokes-Robinson (ZSR) lines. The Pitzer model, Pitzer-Simonson-Clegg (PSC) model and Reaction model were selected to correlate and predict the water activity obtained in this work and the solubility reported in literature for the CuCl2-MCl2-H2O (M = Mg, Ca) ternary systems at 298.15 K. It was found that, the Pitzer model and PSC model cannot consistently represent these thermodynamic properties, with the binary and mixing parameters that already reported or fitted in this work. However, the Reaction model, representing the different competition association ability of common-anions and water molecules with different cations, can successfully predictethe water activity and solubility isotherms in these ternary systems at 298.15 K with binary parameters only. Applying the Reaction model, some examples of the Cu-bearing species distribution as a function of MgCl2 (CaCl2) molalities are given and used to account for how the structure variation of a electrolyte solution influences its macroproperties. (C) 2020 Elsevier B.V. All rights reserved. |
| 资助项目 | National Natural Science Foundation of China[U1707602] ; National Natural Science Foundation of China[21463010] |
| WOS研究方向 | Thermodynamics ; Chemistry ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000634507100001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/48259]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Guo, Lijiang; Zhou, Quanbao; Zeng, Dewen |
| 作者单位 | 1.East China Univ Technol, Jiangxi Key Lab Mass Spectrometry & Instrumentat, Nanchang 330013, Jiangxi, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Lijiang,Zhou, Quanbao,Zeng, Dewen. Isopiestic measurements of water activities and thermodynamic modeling for CuCl2-MCl2-H2O (M = Mg, Ca) ternary system at t=298.15 K[J]. FLUID PHASE EQUILIBRIA,2021,535:18. |
| APA | Guo, Lijiang,Zhou, Quanbao,&Zeng, Dewen.(2021).Isopiestic measurements of water activities and thermodynamic modeling for CuCl2-MCl2-H2O (M = Mg, Ca) ternary system at t=298.15 K.FLUID PHASE EQUILIBRIA,535,18. |
| MLA | Guo, Lijiang,et al."Isopiestic measurements of water activities and thermodynamic modeling for CuCl2-MCl2-H2O (M = Mg, Ca) ternary system at t=298.15 K".FLUID PHASE EQUILIBRIA 535(2021):18. |
入库方式： OAI收割
来源：过程工程研究所
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