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Type: Artigo de periódico
Title: Measurements Of Excess Molar Enthalpy And Excess Molar Heat Capacity Of (1-heptanol Or 1-octanol)+(diethylamine Or S-butylamine) Mixtures At 298.15 K And 0.1 Mpa
Author: Checoni R.F.
Francesconi A.Z.
Abstract: Experimental data of excess molar enthalpy (H mE ) and excess molar heat capacity (C pmE ) of binary mixtures containing (1-heptanol or 1-octanol)+(diethylamine or s-butylamine) have been determined as a function of composition at 298.15 K and at 0.1 MPa using a modified 1455 Parr solution calorimeter. The excess molar enthalpy data are negative and show parabolic format over the whole composition range; however, the excess molar heat capacity values, whose curves show a S-shape, are positive in the 0.0 to 0.7 molar fraction range and negative between the molar fraction values 0.7 to 1.0. The applicability of the ERAS-model to correlate the excess molar enthalpy data was tested. The calculated data values are in good agreement with the experimental ones. The experimental behavior of H mE is interpreted in terms of specific interactions between 1-alkanol and amine molecules. © 2009 Akadémiai Kiadó, Budapest, Hungary.
Rights: fechado
Identifier DOI: 10.1007/s10973-008-9602-1
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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