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|Type:||Artigo de periódico|
|Title:||Volumetric behaviour of binary mixtures of (trichloromethane plus amines) at temperatures between T = (288.15 and 303.15) K at p=0.1 MPa|
|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 ((V) over bar (00)(i)) have been determined using three different methods. (C) 2008 Elsevier Ltd. All rights reserved.|
|Editor:||Academic Press Ltd Elsevier Science Ltd|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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