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Metastable phase equilibria of the reciprocal quaternary system containing sodium, potassium, chloride, and borate ions at 308.15 K
Deng, Tianlong1,2; Meng, Lingzong1,3; Sun, Bai1
2008-03-01
Source PublicationJOURNAL OF CHEMICAL AND ENGINEERING DATA
Volume53Issue:3Pages:704-709
SubtypeArticle
AbstractThe metastable solubility of the reciprocal quaternary system containing sodium, potassium, chloride, and borate ions and the physicochemical properties corresponding to density, viscosity, pH value, and refractive index at 308.15 K have been studied with the isothermal evaporation method. According to the experimental data, the metastable equilibrium phase diagrams of dry salt and the water phase diagram of the system were plotted. In the dry-salt phase diagram, there are two invariant points, five univariant curves, and four crystallizing regions corresponding to sodium chloride, potassium chloride, borax (Na2B4O7 center dot 10H(2)O), and potassium tetraborate tetrahydrate (K2B4O7 center dot 4H(2)O). The crystallized region of borax is the largest, while the phase region of NaCl is the smallest with the highest concentration and a strong salting-out effect to borax. There are neither double salts nor solid solutions formed in the metastable system. When compared with the stable phase diagram at 298.15 K of the system, the areas of both metastable phase regions of borax and potassium chloride are enlarged, while other metastable phase regions are decreased. The calculated values of densities and refractive index in the metastable quaternary system with the empirical equations are in good agreement with the experimental values.
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Multidisciplinary ; Engineering, Chemical
WOS IDWOS:000254008900016
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/5832
Collection青海盐湖研究所知识仓储
Affiliation1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
2.Chengdu Univ Technol, Coll Mat Chem & Chem Engn, Chengdu 610059, Peoples R China
3.Grad Univ, Chinese Acad Sci, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Deng, Tianlong,Meng, Lingzong,Sun, Bai. Metastable phase equilibria of the reciprocal quaternary system containing sodium, potassium, chloride, and borate ions at 308.15 K[J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA,2008,53(3):704-709.
APA Deng, Tianlong,Meng, Lingzong,&Sun, Bai.(2008).Metastable phase equilibria of the reciprocal quaternary system containing sodium, potassium, chloride, and borate ions at 308.15 K.JOURNAL OF CHEMICAL AND ENGINEERING DATA,53(3),704-709.
MLA Deng, Tianlong,et al."Metastable phase equilibria of the reciprocal quaternary system containing sodium, potassium, chloride, and borate ions at 308.15 K".JOURNAL OF CHEMICAL AND ENGINEERING DATA 53.3(2008):704-709.
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