Phase Diagram, Densities, and the Refractive Index of New Aqueous Two-Phase System Formed by PEO1500+Thiosulfate + H2O at Different Temperatures

被引：19
作者：
Boggione Santos, Igor Jose [1 ]
Maduro de Carvalho, Raquel Moreira [1 ]
Hespanhol da Silva, Maria C. [1 ]
Mendes da Silva, Luis Henrique [1 ]
机构：
[1] Univ Fed Vicosa, Grp Quim Verde Coloidal & Macromol, Dept Quim, Ctr Ciencias Exatas, BR-36570000 Vicosa, MG, Brazil
来源：
JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2012年 / 57卷 / 02期
关键词：
SALT PLUS WATER; LIQUID-LIQUID EQUILIBRIA; TRIBLOCK COPOLYMER; DRIVING-FORCE; SULFATE SALTS; SEPARATION; EXTRACTION; BEHAVIOR; ANION; L35;
D O I：
10.1021/je200744s
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The present study includes measurements of the phase composition, density, and refractive index of aqueous two-phase systems of poly(ethylene oxide) 1500 (PEO1500) + sodium thiosulfate + H2O at (283.15, 298.15, and 313.15) K. With the experimental results obtained, phase diagrams were established, and the influence of temperature on the densities, binodal position, and refractive index values was analyzed and discussed. The experimental tie-lines were described using the Othmer-Tobias correlation. The experimental aqueous two-phase system data were correlated with the nonrandom two-liquid (NRTL) thermodynamic model for the activity coefficients; the results were considered excellent according to a global root-mean-square deviation of 0.97 %.
引用
收藏
页码：274 / 279
页数：6
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