کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5409318 | 1393363 | 2016 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermodynamic properties of aqueous poly(ethylene glycol) 2000-Na2MoO4 systems
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this work, the thermodynamic behavior of aqueous solutions containing the solutes Na2MoO4 and poly(ethylene glycol) (PEG) was investigated. These chemistries are vital components for forming the aqueous two-phase system constituted by the three compounds. In this sense, the water activity of the ternary system at 303.15, 313.15, 323.15 and 333.15Â K were determined, using vapor pressure osmometry. During the measurements, the concentration of PEG was fixed to 0.30, 0.25, 0.20, 0.10 and 0.05 mass fraction whereas the salt concentration was fixed to 0.14, 0.12, 0.10, 0.08, 0.06, 0.04 and 0.02 mass fraction. The results show that sodium molybdate has a significant effect on the water activity in the PEG-salt-water system. From these measurements, values of the vapor pressure of solutions were determined. Finally, the investigated systems were modeled with the UNIQUAC model which allowed correlating the properties of these multi-solute aqueous solutions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 224, Part A, December 2016, Pages 132-138
Journal: Journal of Molecular Liquids - Volume 224, Part A, December 2016, Pages 132-138
نویسندگان
Yecid P. Jimenez,