کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6659671 | 1426189 | 2018 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of temperature on thermal (density), caloric (heat capacity), acoustic (speed of sound) and transport (viscosity) properties of 1-octyl-3-methylimidazolium hexafluorophosphate at atmospheric pressure
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
DensityÏ(T), heat capacityCP(T), speed of soundc(T), and viscosity,η(T), were measured for the ionic liquid (IL) 1-octyl-3-methylimidazolium hexafluorophosphate [OMIM][PF6] at atmospheric pressure as a function of temperature from (278.15 to 413.15) K for the density (Ï), from (253.15 to 413.15) K for the heat capacity (CP), from (278.15 to 343.15) K for the speed of sound (c), and from (269.96 to 413.82) K for the viscosity (η), using various type of commercial instruments. The combined expanded uncertainty of the viscosity, heat capacity, speed of sound, density, and temperature measurements at the 68% confidence level with a coverage factor of kâ¯=â¯2 is estimated to be 0.5% (for SVM 3000 Stabinger viscometer) and 1.5% (for Rheometer MCR 302), 1.5%, ±0.5â¯m·sâ1, 0.23% (including the purity and calibration effects), and 15â¯mK, respectively. These new experimental data were used to develop wide range correlations for the viscosity based on theoretically confirmed Arrhenius-Andrade and Vogel-Tamman-Fulcher (VTF) models. The value of the glass temperature (Tg) for the IL was estimated using the VTF parameters derived from the present viscosity measurements. Measured values of density, heat capacity, and speed of sound were used to calculate other important thermodynamic properties, κS,κT, αP, γV, ÎH, CV, (âHâP)T, and (âUâV)T.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Chemical Thermodynamics - Volume 124, September 2018, Pages 49-64
Journal: The Journal of Chemical Thermodynamics - Volume 124, September 2018, Pages 49-64
نویسندگان
Javid Safarov, Christoffer Bussemer, Abilgani Aliyev, Carlos Lafuente, Egon Hassel, Ilmutdin Abdulagatov,