کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5408712 1506540 2017 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermodynamic properties of mixtures containing 1-butyl-2,3-dimethylimidazolium tetrafluoroborate and cyclopentanone or cyclohexanone
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Thermodynamic properties of mixtures containing 1-butyl-2,3-dimethylimidazolium tetrafluoroborate and cyclopentanone or cyclohexanone
چکیده انگلیسی
The densities, ρ, speeds of sound, u, and molar heat capacities, CP, of 1-butyl-2,3-dimethylimidazolium tetrafluoroborate (1) + cyclopentanone or cyclohexanone (2) mixtures at 293.15, 298.15,303.15 and 308.15 K and excess molar enthalpies, HE of same mixtures at 298.15 K have been measured as a function of composition. The observed ρ, u, and CP values are used to determine excess molar volumes, VE, excess isentropic compressibilities, κSE and excess heat capacities, CPE. The analysis of VE data in terms of Graph theory has suggested that while 1-butyl-2,3-dimethylimidazolium tetrafluoroborate exists as monomer; cyclopentanone and cyclohexanone exist as mixture of open and cyclic dimer. The analysis of inter-nuclear distances among interacting atoms (predicted by quantum mechanical calculations) also supports the presence of proposed molecular entities in pure and mixed states. It has been observed that VE, κSE, CPE and HE estimated by Graph theory compare well with their experimental values.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 231, April 2017, Pages 225-237
نویسندگان
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