Asia-Pacific Journal of Chemical Engineering
·
2020
·Vol. 16
·期 2
·e2595
·
IF 1.06
Xiao-Yun Qi,Chun-Xia He,Shi-Hua Sang,Jia Liu,Yun-Yun Gao
The solubilities of the LiBr−NaBr−KBr−H 2 O system and its subsystems LiBr−NaBr−H 2 O and LiBr−KBr−H 2 O were investigated at 288.15 K by the isothermal dissolution equilibrium method, and the corresponding phase diagrams were plotted, respectively. In the three systems, neither solid solution nor double salt was found. For the first subsystem LiBr−NaBr−H 2 O, there are two invariant points, three dissolution equilibrium curves, and three crystallization regions, which are LiBr·2H 2 O, NaBr·2H 2 O, and NaBr. An invariant point, two dissolution equilibrium curves, and two crystallization regions, which are LiBr·2H 2 O and KBr, constitute the stable phase diagram of the second subsystem LiBr−KBr−H 2 O. The phase diagram of the quaternary system LiBr−NaBr−KBr−H 2 O consists of two invariant points, five solubility curves, and four regions in which are LiBr·2H 2 O, NaBr, NaBr·2H 2 O, and KBr.
研究领域:
化学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2020
·
IF 2.369
Rui-Zhi Cui,Wu Li,Ya-Ping Dong,Jun Li
The solubilities in the thermodynamic phase equilibria of the LiBr–NaBr–KBr–H2O system and its two subsystems LiBr–NaBr–H2O and LiBr–KBr–H2O at 298.15 K were investigated experimentally by the isothermal solution equilibrium method. Relevant stable-phase diagrams were plotted based on the experimental results. Using Pitzer’s solution model, nonreported mixing parameters ΨLi,Na,Br and ΨLi,K,Br were acquired and the solubilities of three systems were also predicted at 298.15 K. The results show that good agreement was obtained between calculated and experimental values.
研究领域:
物理化学
·
热力学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2022
·
IF 3.119
Xiao-Feng Guo,Shi-Hua Sang,Chao Ye
The underground brines in the Sichuan basin of China are rich in many valuable components, such as Li+, K+, Sr2+, Br–, and others. In view of comprehensive utilization of the underground brines, the stable solid–liquid equilibria of the quaternary systems LiBr–NaBr–KBr–H2O and LiBr–KBr–SrBr2–H2O at 308.15 K were measured by the isothermal dissolution equilibrium method. The results show that both phase diagrams of the quaternary systems listed above are hydrate-type. Both equilibrium phase diagrams are composed of two invariant points, five univariant curves and four crystallization fields. The equilibrium solid phases in the first quaternary system are LiBr·2H2O, NaBr·2H2O, NaBr, and KBr, respectively, and those in the second quaternary system are LiBr·2H2O, SrBr2·6H2O, SrBr2·2H2O, and KBr. In both phase diagrams, the crystallization field of KBr is the largest, while that of LiBr·2H2O is the smallest. The results indicate that KBr is the easiest to be separated from the saturated solution in the two quaternary systems. Furthermore, the comparison of phase equilibria of the quaternary systems and its ternary subsystems at different temperatures is presented and discussed in detail.
研究领域:
化学工程
·
物理化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2022
·
IF 4.132
Guo-liang Nie,Rui-zhi Cui,Zhong Liu,Wu Li
In view of the composition characteristics of lithium, calcium, and bromine rich in Nanyishan oilfield water of the Qaidam Basin, Qinghai Province, the phase equilibrium relationships of quaternary system LiBr–NaBr–KBr–H2O and its ternary subsystems LiBr–NaBr–H2O and LiBr–KBr–H2O at 348.15 K were studied by the isothermal solution equilibrium method, and the equilibrium solid-phase crystallization regions and composition of each invariant point in each system were determined. The results show that there is no complex salt or solid solution in ternary systems LiBr–NaBr–H2O and LiBr–KBr–H2O at 348.15 K, and the phase diagram contains only one invariant point, two isothermal univariate curves, and two equilibrium solid-phase crystallization regions. The quaternary system LiBr–NaBr–KBr–H2O also has no formation of complex salt or solid solution, and the phase diagram contains only one invariant point, three isothermal univariate curves, and three equilibrium solid-phase crystallization regions. Meanwhile, the phase equilibrium relationships and change laws of each component of the above-mentioned systems at different temperatures were compared and discussed.
研究领域:
化学工程
·
物理化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2022
·
IF 3.119
Guo-Liang Nie,Rui-Zhi Cui,Wu Li
According to the composition characteristics of lithium, potassium, bromine, and other resources rich in the salt lake brine of the Qinghai–Tibet Plateau, the phase equilibria of the quaternary system LiBr-NaBr-KBr-H2O and its ternary subsystem LiBr-KBr-H2O at 323.15 K are studied by an isothermal dissolution equilibrium method. The solubility of each system in equilibrium solution at the corresponding temperature is measured, and the corresponding phase diagrams are drawn according to the phase equilibrium experimental data. The results show that there is no complex salt or solid solution in the ternary system LiBr-KBr-H2O at 323.15 K. The phase diagram contains one invariant point (E1), two univariate curves (AE1 and BE1), and two equilibrium solid crystallization regions (corresponding to LiBr·H2O and KBr), belonging to the simple cosaturated type. The quaternary system LiBr-NaBr-KBr-H2O also has no formation of complex salt and solid solution. The phase diagram contains two invariant points (F1 and F2), five univariate curves (E1F1, E3F1, F1F2, E2F2, and E4F2), and four equilibrium solid-phase crystallization regions (corresponding to LiBr·H2O, KBr, NaBr·2H2O, and NaBr). At the same time, to further explain the phase equilibrium relationship of each system at different temperatures and the change rule of each component, comparison and discussion are carried out.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
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