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Type: Artigo de periódico
Title: Volumetric Behaviour Of Binary Mixtures Of (trichloromethane + Amines) At Temperatures Between T = (288.15 And 303.15) K At P = 0.1 Mpa
Author: Magalhaes J.G.
Torres R.B.
Volpe P.L.O.
Abstract: In this work, densities of binary mixtures of {trichloromethane (TCM) + n-butylamine (n-BA), or + s-butylamine (s-BA), or + diethylamine (DEA), or + triethylamine (TEA)} have been determined under atmospheric pressure as a function of composition and temperature using a vibrating-tube densimeter. The temperatures studied were T = (288.15, 293.15, 298.15, and 303.15) K. The excess molar volumes (V m E), calculated from density data are negative for all studied systems and the negative deviations follow the sequence: TEA > DEA > s-BA > n-BA. Negative values of V m E for binary mixtures were attributed to the formation of hydrogen bonding and of a charge transfer complex between TCM and amines and to structural effects. The partial molar volumes at infinite dilution of each component (over(V, -) i oo) have been determined using three different methods. © 2008 Elsevier Ltd. All rights reserved.
Rights: fechado
Identifier DOI: 10.1016/j.jct.2008.05.003
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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