کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
692007 1460463 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Heat capacity and electrical conductivity of aqueous mixtures of [Bmim][BF4] and [Bmim][PF6]
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Heat capacity and electrical conductivity of aqueous mixtures of [Bmim][BF4] and [Bmim][PF6]
چکیده انگلیسی
New measurements of molar heat capacity Cp and electrical conductivity σ for aqueous binary systems of 1-butyl-3-methylimidazolium tetrafluoroborate, [Bmim][BF4] and 1-butyl-3-methylimidazolium hexafluorophosphate, [Bmim][PF6] are reported. Heat capacities were measured from 303.2 to 353.2 K with a differential scanning calorimeter having a measurement uncertainty of ±0.015 kJ/(kg K). Electrical conductivities were measured from 293.2 to 353.2 K with a conductivity meter having a measurement uncertainty of ±0.001 (mS/cm). An excess molar heat capacity expression using the Redlich-Kister equation for composition dependence was used to represent the measured Cp of the studied systems. An empirical equation proposed by another researcher was modified to correlate the composition dependence of the measured σ of the investigated systems. The correlations yield satisfactory results. The heat capacities and electrical conductivities of the studied systems presented in this work are, in general, of sufficient accuracy for most engineering-design calculations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Taiwan Institute of Chemical Engineers - Volume 40, Issue 2, March 2009, Pages 205-212
نویسندگان
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