Authors: Mariana Teodorescu B Marongiu Sara Maxia Alessandra Piras Marianna Usula Silvia Porcedda
Publish Date: 2013/10/08
Volume: 116, Issue: 1, Pages: 119-127
Abstract
Excess enthalpies H E at 29815 K and atmospheric pressure determined for 12 binary liquid mixtures containing nitromethane or nitroethane+1chlorobutane +1chloropentane +1chlorohexane +12dichloroethane +13dichloropropane and +14dichlorobutane by means of a flow 2277LKB microcalorimeter are reported on over composition range The experimental results along with the literature data on vapor–liquid equilibrium VLE excess Gibbs energies G E and activity coefficients at infinite dilution gamma textiinfty are interpreted in terms of DISQUAC group contribution model The systems are characterized by three types of contact surface nitro NO2 chlorine Cl and alkyl CH3 CH2 The interchange energy parameters of the alkyl/NO2 and alkyl/Cl contacts were determined independently from the study of alkane+nitroalkane and alkane+chloroalkane systems The structuredependent interchange parameters of the NO2/Cl contact are reported in this work The model provides a fairly consistent description of the VLE and of thermodynamic functions G E H E gamma textiinfty for all investigated mixtures
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