کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5408925 1506533 2017 44 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solubility determination and thermodynamic modeling of sodium 1-naphthalenesulfonate and sodium 2-naphthalenesulfonate in six organic solvents from T = (278.15 to 323.15) K and mixing properties of solutions
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Solubility determination and thermodynamic modeling of sodium 1-naphthalenesulfonate and sodium 2-naphthalenesulfonate in six organic solvents from T = (278.15 to 323.15) K and mixing properties of solutions
چکیده انگلیسی
The solubility of sodium 1-naphthalenesulfonate and sodium 2-naphthalenesulfonate in pure organic solvents of acetone, 1,4-dioxane, cyclohexanone, ethanol, ethyl acetate and isopropanol were measured by using the isothermal saturation method at temperature ranging from (278.15 to 323.15) K under 101.3 kPa. The mole fraction solubility of sodium 1-naphthalenesulfonate and sodium 2-naphthalenesulfonate in the selected pure solvents increased with the increase in temperature. The maximum mole fraction solubility of sodium 1-naphthalenesulfonate was observed in ethanol (2.767 × 10− 3 at 323.15 K), followed by that in 1,4-dioxane (2.028 × 10− 3 at 323.15 K), cyclohexanone (1.522 × 10− 3 at 323.15 K), isopropanol (1.094 × 10− 3 at 323.15 K), acetone (5.997 × 10− 4 at 308.15 K) and ethyl acetate (3.111 × 10− 4 at 323.15 K); For sodium 2-naphthalenesulfonate + solvents systems, the maximum mole fraction solubility was observed in ethanol (1.178 × 10− 3 at 323.15 K), followed by that in 1,4-dioxane (1.027 × 10− 3 at 323.15 K), ethyl acetate (6.197 × 10− 4 at 323.15 K), cyclohexanone (3.233 × 10− 4 at 323.15 K), isopropanol (1.058 × 10− 4 at 323.15 K) and acetone (9.683 × 10− 5 at 323.15 K). The measured solubility data were correlated and calculated by using the modified Apelblat equation, λh equation and NRTL model. The calculated solubilities agreed better with the experimental values by using the modified Apelblat equation than the other two models. Moreover, the mixing properties including the mixing Gibbs energy, mixing enthalpy, mixing entropy, activity coefficient at infinitesimal concentration (γ1∞) and reduced excess enthalpy (H1E , ∞) were calculated by NRTL model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 238, July 2017, Pages 27-35
نویسندگان
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