کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
203952 460687 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Vapour pressures and enthalpies of vaporization of a series of the alkylbiphenyls
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Vapour pressures and enthalpies of vaporization of a series of the alkylbiphenyls
چکیده انگلیسی

Vapour pressure of 2-methyl-biphenyl, 3-methyl-biphenyl, 4,4′-di-methyl-biphenyl, 3-iso-propyl-biphenyl, 3-tert-butyl-biphenyl and 4,4′-di-tert-butyl-biphenyl were measured by the transpiration method. Vapour pressure of 3-iso-propyl-biphenyl, 3-tert-butyl-biphenyl and 4-tert-butyl-biphenyl measured by ebulliometry. Equations for temperature dependences of the saturated vapour pressures were derived. Molar standard enthalpies of vaporization at the reference temperature were calculated from temperature dependences of vapour pressures. Additionally, enthalpies of vaporization of 3-iso-propyl-biphenyl were directly measured in the temperature range from 323 to 373 K using an isothermal heat conducting Calvet microcalorimeter. The enthalpy of vaporization at the reference temperature 298 K of 3-iso-propyl-biphenyl was calculated from the experimental temperature dependence of vaporization enthalpy. The Ambrose–Walton equation was applied for correlation and prediction of vapour pressures and vaporization enthalpies of alkyl-substituted biphenyls.


► We measured vapour pressures and vaporization enthalpies of alkyl substituted biphenyls.
► Enthalpies of vaporization at 298 K were derived and tested for consistency.
► The Ambrose–Walton method was developed for prediction of vaporization thermodynamics.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 335, 15 December 2012, Pages 88–98
نویسندگان
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