CsCl-PEG8000-H2O三元体系288.2、298.2、308.2 K相平衡测定

doi:10.11949/0438-1157.20201720

摘要/Abstract

摘要：

采用等温溶解法和浊点法研究了288.2、298.2、308.2 K下三元体系CsCl-PEG8000-H₂O的相平衡关系，采用经验方程分别对双液线和结线数据进行了拟合，绘制了完整相图。研究发现CsCl-PEG8000-H₂O体系在288.2、298.2、308.2 K下同时存在固液平衡与液液平衡关系，其完整相图均由不饱和液相区（L）、两个一液一固区（L+S）、双液相区（2L）、两液一固区（2L+S）和两固一液区（2S+L）构成；随着温度升高，不饱和液相区（L）、双液相区（2L）、一液一固区（L+S）、两液一固区（2L+S）均增大，两固一液区（2S+L）减小。对比288.2、298.2、308.2 K下三元体系CsCl-PEG1000/4000/6000/8000-H₂O完整相图，结果表明：288.2、298.2 K时，仅CsCl-PEG1000-H₂O体系存在固液平衡关系，CsCl-PEG4000/6000/8000-H₂O体系同时存在固液和液液平衡关系；308.2 K时，CsCl-PEG1000/4000/6000/8000-H₂O体系同时存在固液和液液平衡关系；双液相区（2L）随聚乙二醇分子量增大而增大。

关键词: 相平衡, 溶解性, 热力学性质, 聚合物, 混合溶剂

Abstract:

The phase equilibrium relationship of the ternary system CsCl-PEG8000-H₂O at 288.2, 298.2 and 308.2 K was studied by isothermal dissolution method and turbidimetric method. Meanwhile, the empirical equations were used to fit the data of binodal curve and tie line. Based on the experimental data, the completed phase diagrams at 288.2, 298.2 and 308.2 K were plotted. According to the experimental results, both solid-liquid equilibrium and liquid-liquid equilibrium coexisted in the ternary systems CsCl-PEG8000-H₂O at T = 288.2, 298.2 and 308.2 K. The corresponding phase diagrams at three temperature all composed of 6 regions: unsaturated liquid phase (L), two regions of one liquid and one solid phase CsCl (L+S), region of two-liquids phase (2L), two liquids with one solid CsCl (2L+S), and region of one liquid with two solids of CsCl and PEG8000 (L+2S). Comparing the phase diagrams CsCl-PEG8000-H₂O at T = 288.2, 298.2 and 308.2 K, it can be concluded that with the temperature increase, the areas of (L), (2L), (L+S) and (2L+S) increased, while the area of (2S+L) decreased. Comparing the phase diagrams CsCl-PEG1000/4000/6000/8000-H₂O at T = 288.2, 298.2 and 308.2 K, it can be found that there is only solid-liquid equilibrium in the ternary system CsCl-PEG1000-H₂O at 288.2 and 298.2 K, while the solid-liquid and liquid-liquid equilibria were found in the systems CsCl-PEG4000/6000/8000-H₂O at 288.2 and 298.2 K. Both solid-liquid and liquid-liquid equilibria were found in ternary systems CsCl-PEG1000/4000/6000/8000-H₂O at 308.2 K. And the region of two-liquids phase increase with the increase of molecular weight of PEG.

Key words: phase equilibria, solubility, thermodynamic properties, polymers, mixed solvents

中图分类号:

O 642.4

罗军, 王林, 黄琴, 任思颖, 于旭东, 曾英. CsCl-PEG8000-H₂O三元体系288.2、298.2、308.2 K相平衡测定[J]. 化工学报, 2021, 72(6): 3140-3148.

LUO Jun, WANG Lin, HUANG Qin, REN Siying, YU Xudong, ZENG Ying. Phase equilibria for ternary system CsCl-PEG8000-H₂O at 288.2, 298.2 and 308.2 K[J]. CIESC Journal, 2021, 72(6): 3140-3148.

参考文献 41

1	郑绵平, 张永生, 刘喜方, 等. 中国盐湖科学技术研究的若干进展与展望[J]. 地质学报, 2016, 90(9): 2123-2166.
	Zheng M P, Zhang Y S, Liu X F, et al. Progress and prospects of salt lake research in China[J]. Acta Geologica Sinica, 2016, 90(9): 2123-2166.
2	乜贞, 卜令忠, 刘建华, 等. 我国盐湖钾盐资源现状及提钾工艺技术进展[J]. 地球学报, 2010, 31(6): 869-874.
	Nie Z, Bu L Z, Liu J H, et al. Status of potash resources in salt lakes and progress in potash technologies in China[J]. Acta Geoscientica Sinica, 2010, 31(6): 869-874.
3	Zheng M P, Deng T L, Oren A. Introduction to Salt Lake Sciences[M]. Beijing: Science Press, 2018: 8-11.
4	Guo L J, Li H X. Solubility measurement of the solid solution containing the RbCl-CsCl-H₂O system from T = 298.15 to 348.15 K[J]. Journal of Chemical & Engineering Data, 2020, 65(4): 1663-1668.
5	Gao D D, Li D D, Hu B, et al. Solid-aqueous phase equilibria in the quaternary NaCl + KCl + RbCl + H₂O system: thermodynamic predictions and experimental verifications at 298.15 K[J]. Journal of Chemical & Engineering Data, 2020, 65(10): 4837-4844.
6	Li D D, Gao D D, Zeng D W, et al. Understanding the solid solution-aqueous solution equilibria in the KCl + RbCl + H₂O system from experiments, atomistic simulation and thermodynamic modeling[J]. Journal of Solution Chemistry, 2017, 46(9/10): 1871-1902.
7	Yu X D, Zeng Y, Mu P T, et al. Solid-liquid equilibria in the quinary system LiCl-KCl-RbCl-MgCl₂-H₂O at T = 323 K[J]. Fluid Phase Equilibria, 2015, 387: 88-94.
8	Gomis A, Garcia-Cano J, Font A, et al. Influence of the temperature on the equilibrium phase diagram of the ternary system water + ammonium chloride + 2-propanol at 101.3 kPa[J]. The Journal of Chemical Thermodynamics, 2019, 131: 33-39.
9	Lovera-Copa J A, Alavia W, Tíjaro-Rojas R, et al. Prediction and correlation of the solubility of alkali chlorides in different solvent mixtures and temperatures[J]. Fluid Phase Equilibria, 2018, 461: 28-38.
10	Marchel M, João K G, Marrucho I M. On the use of ionic liquids as adjuvants in PEG-(NH₄)₂SO₄ aqueous biphasic systems: phase diagrams behavior and the effect of IL concentration on myoglobin partition[J]. Separation and Purification Technology, 2019, 210: 710-718.
11	Hu M C, Wang M X, Li S N, et al. Liquid-liquid equilibria for water + 1-propanol/2-propanol + potassium chloride + cesium chloride quaternary systems at 298.1 ± 0.1 K[J]. Fluid Phase Equilibria, 2008, 263(1): 109-114.
12	Chen J X, Zhong Y L, Han J, et al. Liquid-liquid equilibria for water + 1-propanol (or 1-butanol) + potassium chloride + ammonium chloride quaternary systems at 298.15 K[J]. Fluid Phase Equilibria, 2015, 397: 50-57.
13	Sosa F H B, de Araujo Sampaio D, Farias F O, et al. Measurement and correlation of phase equilibria in aqueous two-phase systems containing polyethyleneglycol (2000, 4000, and 6000) and sulfate salts (manganese sulfate and copper sulfate) at different temperatures (298.15, 318.15, and 338.15 K)[J]. Fluid Phase Equilibria, 2017, 449: 68-75.
14	Zheng H, Chen S, Wang L, et al. Phase equilibria of the ternary systems potassium sulfate + polyethylene glycol (PEG6000/10, 000) + water at 288.2, 298.2 and 308.2 K: experimental determination and correlation[J]. Journal of Solution Chemistry, 2020, 49(9/10): 1154-1169.
15	郑洪, 王林, 李茂兰, 等. 三元体系K₂SO₄-PEG1000-H₂O(288, 298, 308)K相平衡测定及计算[J]. 高校化学工程学报, 2020, 34(2): 552-557.
	Zheng H, Wang L, Li M L, et al. Phase equilibrium measurements and simulation of the ternary system K₂SO₄-PEG1000-H₂O at T =(288, 298, and 308) K[J]. Journal of Chemical Engineering of Chinese Universities, 2020, 34(2): 552-557.
16	Shuai C, Niancu C, Hong Z, et al. The effect of temperature on phase equilibria of polyethylene glycol(PEG8000)-K₂SO₄-H₂O at T=(288.15, 298.15, 308.15)K[J]. Chinese Journal of Chemical Engineering, 2020, 28(12): 3079-3085.
17	Soleymani J, Jouyban-Gharamaleki V, Kenndler E, et al. Measurement and modeling of sodium chloride solubility in binary mixtures of water + polyethylene glycol 400 at various temperatures[J]. Journal of Molecular Liquids, 2020, 316: 113777.
18	Justel F J, Villca G, Jimenez Y P. Measurement and modelling of water activity, density, sound velocity, refractive index and viscosity of the Na₂MoO₄ + poly(ethylene glycol) + H₂O system in the temperature range from 313.15 to 333.15 K[J]. Fluid Phase Equilibria, 2020, 518: 112628.
19	Herbst J, Pott R W M. The effect of temperature on different aqueous two-phase diagrams of polyethylene glycol (PEG 6000, PEG 8000, and PEG 10000) + potassium sodium tartrate + water[J]. Journal of Chemical & Engineering Data, 2019, 64(7): 3036-3043.
20	Yu X D, Wang L, Li M L, et al. Phase equilibria of CsCl-polyethylene glycol (PEG)-H₂O at 298.15 K: effect of different polymer molar masses (PEG1000/4000/6000)[J]. The Journal of Chemical Thermodynamics, 2019, 135: 45-54.
21	Wang L, Zheng H, Chen S, et al. Solid-liquid and liquid-liquid equilibria for the system composed of cesium chloride, polyethylene glycol (PEG1000/4000/6000) and water at 288.15 and 308.15 K[J]. Journal of Solution Chemistry, 2020, 49(11): 1382-1401.
22	Li M L, Wang L, Zheng H, et al. Solid: liquid equilibrium in ternary system RbCl + polyethylene glycol PEG1000 + H₂O at 288.15, 298.15, and 308.15 K[J]. Russian Journal of Physical Chemistry A, 2019, 93(13): 2586-2592.
23	Li M L, Yu X D, Huang Q, et al. Phase equilibria measurements and correlation of aqueous solvent of PEG4000 with rubidium chloride at (288.15, 298.15, and 308.15) K[J]. The Journal of Chemical Thermodynamics, 2020, 149: 106151.
24	Huang Q, Wang L, Li M L, et al. Measurements and simulation of the polyethylene glycol 1000-water-KCl ternary system at 288.2, 298.2, and 308.2 K[J]. J. Chem. Eng. Jpn., 2019, 52(4): 325-332.
25	于旭东, 黄琴, 王林, 等. KCl-PEG4000-H₂O三元体系288、298、308 K相平衡测定及计算[J]. 化工学报, 2019, 70(3): 830-839.
	Yu X D, Huang Q, Wang L, et al. Measurements and simulation for ternary system KCl-PEG4000-H₂O at 288, 298 and 308 K[J]. CIESC Journal, 2019, 70(3): 830-839.
26	Yu X D, Huang Q, Zheng M, et al. Solid-liquid equilibria of KCl in polyethylene glycol 6000-H₂O mixed solvent at 288.2, 298.2, and 308.2 K: experiment and correlation[J]. Journal of Chemical Engineering of Japan, 2020, 53(6): 229-236.
27	Huang Q, Li M L, Wang L, et al. Solid-liquid equilibria and thermodynamic correlation for the ternary system (KCl + PEG10000/20000 + H₂O) at 288.2 K and 298.2 K[J]. The Journal of Chemical Thermodynamics, 2020, 150: 106221.
28	黄琴, 于旭东, 李茂兰, 等. 308.2 K三元体系 KCl+PEG10000/20000+H₂O相平衡及热力学计算[J]. 化工学报, 2021, 72(4): 1895-1905.
	Huang Q, Yu X D, Li M L, et al. Experimental and thermodynamic simulation for ternary systems KCl+PEG10000/20000+H₂O at 308.2 K[J]. CIESC Journal, 2021, 72(4): 1895-1905.
29	Taboada M E, Asenjo J A, Andrews B A. Liquid-liquid and liquid-liquid-solid equilibrium in Na₂CO₃-PEG-H₂O[J]. Fluid Phase Equilibria, 2001, 180(1/2): 273-280.
30	中国科学院青海盐湖研究所分析室. 卤水和盐的分析方法[M]. 2版. 北京: 科学出版社, 1988: 69-72.
	Institute of Qinghai Salt-Lake of Chinese Academy of Sciences. Analytical Methods of Brines and Salts [M]. 2nd ed. Beijing: Science Press, 1988: 69-72.
31	Cheluget E L, Gelinas S, Vera J H, et al. Liquid-liquid equilibrium of aqueous mixtures of poly(propylene glycol) with sodium chloride[J]. Journal of Chemical & Engineering Data, 1994, 39(1): 127-130.
32	Baskaran D, Chinnappan K, Manivasagan R, et al. Liquid-liquid equilibrium of polymer-inorganic salt aqueous two-phase systems: experimental determination and correlation[J]. Journal of Chemical & Engineering Data, 2017, 62(2): 738-743.
33	Mistry S L, Kaul A, Merchuk J C, et al. Mathematical modelling and computer simulation of aqueous two-phase continuous protein extraction[J]. Journal of Chromatography A, 1996, 741(2): 151-163.
34	Hu M C, Zhai Q G, Jiang Y C, et al. Liquid-liquid and liquid-liquid-solid equilibrium in PEG + Cs₂SO₄ + H₂O[J]. Journal of Chemical & Engineering Data, 2004, 49(5): 1440-1443.
35	Jayapal M, Regupathi I, Murugesan T. Liquid-liquid equilibrium of poly(ethylene glycol) 2000 + potassium citrate + water at (25, 35, and 45)℃[J]. Journal of Chemical & Engineering Data, 2007, 52(1): 56-59.
36	Wang Y, Xu X H, Yan Y S, et al. Phase behavior for the [Bmim]BF₄ aqueous two-phase systems containing ammonium sulfate/sodium carbonate salts at different temperatures: experimental and correlation[J]. Thermochimica Acta, 2010, 501(1/2): 112-118.
37	Han J, Pan R, Xie X Q, et al. Liquid-liquid equilibria of ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate + sodium and ammonium citrate aqueous two-phase systems at (298.15, 308.15, and 323.15) K[J]. Journal of Chemical & Engineering Data, 2010, 55(9): 3749-3754.
38	Othmer D F, Tobias P E. Liquid -liquid extraction data -toluene and acetaldehyde systems[J]. Industrial & Engineering Chemistry, 1942, 34(6): 690-692.
39	González-Tello P, Camacho F, Blázquez G, et al. Liquid-liquid equilibrium in the system poly(ethylene glycol) + MgSO₄ + H₂O at 298 K[J]. Journal of Chemical & Engineering Data, 1996, 41(6): 1333-1336.
40	Hand D B. Dineric distribution[J]. The Journal of Physical Chemistry, 1930, 34(9): 1961-2000.
41	Bachman I. Tie lines in ternary liquid systems[J]. Industrial & Engineering Chemistry Analytical Edition, 1940, 12(1): 38-39.

[1]	杨百玉, 寇悦, 姜峻韬, 詹亚力, 王庆宏, 陈春茂. 炼化碱渣湿式氧化预处理过程DOM的化学转化特征[J]. 化工学报, 2023, 74(9): 3912-3920.
[2]	于旭东, 李琪, 陈念粗, 杜理, 任思颖, 曾英. 三元体系KCl + CaCl₂ + H₂O 298.2、323.2及348.2 K相平衡研究及计算[J]. 化工学报, 2023, 74(8): 3256-3265.
[3]	王杰, 丘晓琳, 赵烨, 刘鑫洋, 韩忠强, 许雍, 蒋文瀚. 聚电解质静电沉积改性PHBV抗氧化膜的制备与性能研究[J]. 化工学报, 2023, 74(7): 3068-3078.
[4]	刘杰, 吴立盛, 李锦锦, 罗正鸿, 周寅宁. 含乙烯基胺酯键聚醚类可逆交联聚合物的制备及性能研究[J]. 化工学报, 2023, 74(7): 3051-3057.
[5]	龙臻, 王谨航, 任俊杰, 何勇, 周雪冰, 梁德青. 离子液体协同PVCap抑制天然气水合物生成实验研究[J]. 化工学报, 2023, 74(6): 2639-2646.
[6]	杨琴, 秦传鉴, 李明梓, 杨文晶, 赵卫杰, 刘虎. 用于柔性传感的双形状记忆MXene基水凝胶的制备及性能研究[J]. 化工学报, 2023, 74(6): 2699-2707.
[7]	张建华, 陈萌萌, 孙雅雯, 彭永臻. 部分短程硝化同步除磷耦合Anammox实现生活污水高效脱氮除磷[J]. 化工学报, 2023, 74(5): 2147-2156.
[8]	陈韶云, 徐东, 陈龙, 张禹, 张远方, 尤庆亮, 胡成龙, 陈建. 单层聚苯胺微球阵列结构的制备及其吸附性能[J]. 化工学报, 2023, 74(5): 2228-2238.
[9]	姚晓宇, 沈俊, 李健, 李振兴, 康慧芳, 唐博, 董学强, 公茂琼. 流体气液临界参数测量方法研究进展[J]. 化工学报, 2023, 74(5): 1847-1861.
[10]	陈科, 杜理, 曾英, 任思颖, 于旭东. 四元体系LiCl+MgCl₂+CaCl₂+H₂O 323.2 K相平衡研究及计算[J]. 化工学报, 2023, 74(5): 1896-1903.
[11]	罗来明, 张劲, 郭志斌, 王海宁, 卢善富, 相艳. 1~5 kW高温聚合物电解质膜燃料电池堆的理论模拟与组装测试[J]. 化工学报, 2023, 74(4): 1724-1734.
[12]	龙臻, 王谨航, 何勇, 梁德青. 离子液体与动力学抑制剂作用下混合气体水合物生成特性研究[J]. 化工学报, 2023, 74(4): 1703-1711.
[13]	吴学红, 栾林林, 陈亚南, 赵敏, 吕财, 刘勇. 可降解柔性相变薄膜的制备及其热性能[J]. 化工学报, 2023, 74(4): 1818-1826.
[14]	吕阳光, 左培培, 杨正金, 徐铜文. 三嗪框架聚合物膜用于有机纳滤甲醇/正己烷分离[J]. 化工学报, 2023, 74(4): 1598-1606.
[15]	毛元敬, 杨智, 莫松平, 郭浩, 陈颖, 罗向龙, 陈健勇, 梁颖宗. C₆~C₁₀烷醇的SAFT-VR Mie状态方程参数回归及其热物性研究[J]. 化工学报, 2023, 74(3): 1033-1041.

CsCl-PEG8000-H₂O三元体系288.2、298.2、308.2 K相平衡测定

Phase equilibria for ternary system CsCl-PEG8000-H₂O at 288.2, 298.2 and 308.2 K

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献 41

相关文章 15

编辑推荐

Metrics

本文评价