کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5413220 | 1506620 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Viscosity and excess molar volume of binary mixtures of methanol with n-butylamine and di-n-butylamine at 303.15, 313.15 and 323.15Â K. Characterization in terms of ERAS model
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The excess molar volume VmE, viscosity deviation Îη, and excess Gibbs energy of activation ÎGâE of viscous flow have been investigated from the density Ï and viscosity η measurements of binary mixtures of methanol with n-butylamine and di-n-butylamine over the entire range of mole fractions at 303.15, 313.15, and 323.15 K. The systems studied exhibit very strong cross association through strong O-Hâ¦N bonding between -OH and -NH- groups. As a consequence of this strong intermolecular association, both the systems have very large negative VmE and positive Îη and ÎGâE over entire range of composition and at all the temperatures of investigation. VmE of the studied mixtures is consistently described by the ERAS model. The values of cross association constants KAB illustrate that cross-associates are more pronounced in primary amine mixtures than that in secondary amine.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 144, Issues 1â2, 10 January 2009, Pages 65-70
Journal: Journal of Molecular Liquids - Volume 144, Issues 1â2, 10 January 2009, Pages 65-70
نویسندگان
Deepak M. Jain, Vishal Shah, Sandip Rabadiya, Shantilal Oswal,