کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6660462 | 1426224 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Activity coefficients at infinite dilution, physicochemical and thermodynamic properties for organic solutes and water in the ionic liquid ethyl-dimethyl-(2-methoxyethyl)ammonium trifluorotris-(perfluoroethyl)phosphate
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
New values of activity coefficients at infinite dilution, γâ for 65 different solutes including alkanes, alkenes, alkynes, cycloalkanes, aromatic hydrocarbons, alcohols, thiophene, ethers, ketones, aldehydes, esters and water in the ionic liquid ethyl-dimethyl-(2-methoxyethyl)ammonium trifluorotris(perfluoroethyl)phosphate, were determined using inverse gas chromatography within the temperature range from (318.15 to 368.15) K. This is a continuation our study of ionic liquids based on this anion and 2-hydroxyethyl cation substituent. The experimental γâ values were used to calculate thermodynamics functions such as partial molar excess Gibbs energy ÎG1E,â, enthalpy ÎH1E,â and entropy ÎS1E,â. Additionally the (gas + liquid) partition coefficients of the solutes, KL were calculated and were used to determine the linear Gibbs energy relationship (LFER) system constants as a function of temperature. Values of the selectivity and capacity at infinite dilution for alkanes/thiophene extraction problems were also calculated. Results were compared to ionic liquids investigated previously with the same anion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Chemical Thermodynamics - Volume 89, October 2015, Pages 245-250
Journal: The Journal of Chemical Thermodynamics - Volume 89, October 2015, Pages 245-250
نویسندگان
Andrzej Marciniak, MichaÅ WlazÅo,