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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, RF
Francesconi, AZ
Abstract: Experimental data of excess molar enthalpy (H (m) (E) ) and excess molar heat capacity (C (pm) (E) ) 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 (m) (E) is interpreted in terms of specific interactions between 1-alkanol and amine molecules.
Subject: 1-alkanols
excess properties
Country: Holanda
Editor: Springer
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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