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Type: Artigo
Title: Synthesis and physical properties of three protic ionic liquids with the ethylammonium cation
Author: Pinto, Rafaela R.
Mattedi, Silvana
Aznar, Martin
Abstract: Three protic ionic liquids with the ethylammonium cation, 2-hidroxy ethylammonium butanoate (2-HEAB), 2-hidroxy ethylammonium pentanoate (2-HEAP) and 2-hidroxy ethylammonium hexanoate (2-HEAH) were synthesized through acid-base neutralization reactions between ethanolamine and the corresponding organic acid. After purification, the salt formation was confirmed by FT-IR analysis. Thermophysical properties, such as density, refractive index, viscosity, heat capacity and degradation temperatures were experimentally determined. Melting points temperatures could not be determined within the temperature range studied. However, it was confirmed that these melting points are located below 323.15 K. Other thermodynamical properties, such as the thermal expansion coefficient, the molecular volume and the standard entropy were calculated from the experimental data through correlation equations. These results are in accordance with the consideration that the density is inversely proportional to the molecular volume and the density order is 2-HEAB > 2-HEAP > 2-HEAH
Subject: Expansão (Calor)
Líquidos iônicos
Country: Itália
Editor: Associazione Italiana di Ingegneria Chimica
Rights: Aberto
Identifier DOI: 10.3303/CET1543195
Date Issue: 2015
Appears in Collections:FEQ - Artigos e Outros Documentos

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