کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
675541 | 1459623 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermodynamic properties of binary mixtures of 2,2,2-trifluoroethanol with water or alkanols at TÂ =Â 298.15Â K
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Thermodynamic properties of binary mixtures of 2,2,2-trifluoroethanol with water or alkanols at TÂ =Â 298.15Â K Thermodynamic properties of binary mixtures of 2,2,2-trifluoroethanol with water or alkanols at TÂ =Â 298.15Â K](/preview/png/675541.png)
چکیده انگلیسی
Excess molar enthalpies (HmE) and excess molar volume (VmE) at TÂ =Â 298.15Â K for binary mixtures of {2,2,2-trifluoroethanol (TFE)Â +Â water or alcohols (methanol, ethanol, 1-propanol)} were obtained by calorimetry and densimetry. Excess molar enthalpies for the (TFEÂ +Â water) system showed endothermic mixing, except for the low TFE concentration range (x1Â <Â 0.1) in which they showed exothermic one. On the other hand, excess molar volumes for this system were negative over the whole range of concentration. Excess molar enthalpies for all the (TFEÂ +Â alcohol) systems were exothermic over the whole range of concentration and decrease in absolute value with increase of the carbon number of the alkyl group in the alcohol molecules (nC). Excess molar volumes were positive over the whole range of concentration and increase with nC. Moreover, we estimated excess partial molar enthalpy (Hm,iE,â) and volume (Vm,iE,â) at infinite dilution from the experimental results. These results were discussed qualitatively from the viewpoint of the intermolecular interactions in the pure component liquids and the mixtures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 459, Issues 1â2, 1 July 2007, Pages 80-86
Journal: Thermochimica Acta - Volume 459, Issues 1â2, 1 July 2007, Pages 80-86
نویسندگان
Takashi Minamihonoki, Hideo Ogawa, Hiroyasu Nomura, Sachio Murakami,