کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
675139 1459589 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Topological investigations of the molecular species and molecular interactions that characterize pyrrolidin-2-one + lower alkanol mixtures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Topological investigations of the molecular species and molecular interactions that characterize pyrrolidin-2-one + lower alkanol mixtures
چکیده انگلیسی
Molar excess volumes, VE, molar excess enthalpies, HE, and speeds of sound data, u, of pyrrolidin-2-one (i) + ethanol or propan-1-ol or propan-2-ol or butan-1-ol (j) binary mixtures have been determined over entire composition range at 308.15 K. The observed speeds of sound data have been utilized to predict excess isentropic compressibilities, κSE of the investigated binary mixtures. The observed excess thermodynamic properties VE, HE and κSE have been analyzed in terms of Graph theory. The analysis of VE data by the Graph theory suggests that pyrrolidin-2-one exists mainly as a mixture of cyclic and open dimer; ethanol as a mixture of dimer and trimer; butan-1-ol and propan-2-ol as mixture of monomer and dimer and propan-1-ol as a dimer in the pure state, and their mixtures contain 1:1 molecular complex. The IR studies lend additional credence to the nature and extent of interactions for the proposed molecular entities in the mixtures. Also, it has been observed that VE, HE and κSE values predicted by the Graph theory compare well to with their corresponding experimental values.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 493, Issues 1–2, 10 September 2009, Pages 19-24
نویسندگان
, , ,