کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
216078 1426262 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Molar heat capacities of some aqueous (2-amino-2-hydroxymethyl-1,3-propanediol + glycol) systems
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Molar heat capacities of some aqueous (2-amino-2-hydroxymethyl-1,3-propanediol + glycol) systems
چکیده انگلیسی

A new set of molar heat capacity data for aqueous {2-amino-2-hydroxymethyl-1,3-propanediol (TRIS) + glycol} at (30 to 80) °C and different concentrations (4% to 16% by weight TRIS or 56% to 44% by weight water, in a fixed amount of glycol – 40% by weight) were gathered via reliable measurement method and are presented in this report. The glycols considered were diethylene glycol (DEG), triethylene glycol (TEG), tetraethylene glycol (T4EG), propylene glycol (PG), dipropylene glycol (DPG), and tripropylene glycol (TPG). The 198 data points gathered fit the equation, Cp = Cp,a + B1m + B2m2 + B3m3, where Cp and Cp,a are the molar heat capacities of the (TRIS + glycol + water) and (water + glycol) systems, respectively, Bi the temperature-dependent parameters, and m the mole TRIS per kilogram (glycol + water). The overall average absolute deviation (AAD) of the experimental data from the corresponding values calculated from the correlation equation was 0.07%.


► The molar heat capacities for several aqueous (2-amino-2-hydroxymethyl-1,3-propanediol + glycol) systems were measured.
► The glycols considered were ethylene glycols and propylene glycols.
► The temperature studied was (30 to 70) °C.
► The measured data were reported as functions of temperature and composition.
► The measured data were represented satisfactorily by the applied correlations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Chemical Thermodynamics - Volume 51, August 2012, Pages 159–164
نویسندگان
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