کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6660985 1426251 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Interface adsorption and micelle formation of ionic liquid 1-hexyl-3-methylimidazolium chloride in the toluene + water system
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Interface adsorption and micelle formation of ionic liquid 1-hexyl-3-methylimidazolium chloride in the toluene + water system
چکیده انگلیسی
The influence of synthesized ionic liquid 1-hexyl-3-methylimidazolium chloride adsorption on equilibrium interfacial tension of toluene-water was studied within concentration range of (1.00 ⋅ 10−4 to 6.00 ⋅ 10−1) mol · dm−3 and temperature range of (293.2 to 313.2) K. Very similar to conventional surfactants, the interfacial tension was decreased with both of these parameters. Meanwhile, the CMC values showed a minimum value within the temperature range studied. The Frumkin adsorption isotherm that accounts for the non-ideal adsorption at the interface showed adequately well for modeling the experimental results. Accordingly quantities like interface excess concentration, adsorption tendency and interaction parameter between adsorbed molecules were obtained at different temperatures. Entropy and energy changes associated with adsorption were also obtained from the temperature dependency of interfacial tension. The adsorption tendency and efficiency increased with temperature, and the maximum interface excess concentration and electrostatic repulsion were achieved at about T = 303.2 K.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Chemical Thermodynamics - Volume 62, July 2013, Pages 92-97
نویسندگان
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