Orientador(es)
Resumo(s)
A thermodynamic study of three ethanolamines, 2-(diethylamino)ethanol, 2-(ethylamino)ethanol and 2-
(isopropylamino)ethanol, reporting the measurements of vapor pressure, liquid phase heat capacities,
and phase behavior is presented in this work. The vapor pressures were measured using a static method
in the temperature interval 238e343 K. After a critical assessment of literature data, selected experimental
data were correlated using the Cox equation. The liquid phase heat capacities were measured in
the temperature range 265e355 K using Tian-Calvet calorimetry and the phase behavior was investigated
using differential scanning calorimetry (DSC) starting from 183 K. For 2-(ethylamino)ethanol and
2-(isopropylamino)ethanol, two monotropically related crystalline forms were identified. To our
knowledge, vapor pressure and heat capacity for 2-(isopropylamino)ethanol and phase behavior data for
2-(ethylamino)ethanol and 2-(isopropylamino)ethanol are reported for the first time in this work.
Descrição
Palavras-chave
Ethanolamines Heat capacity Phase behavior Vapor pressure Vaporization and sublimation enthalpy
Contexto Educativo
Citação
Soares, Bruna P.; Štejfa, V.; Ferreira, Olga; Pinho, Simão P.; Růžička, K.; Fulem, Michal (2018). Vapor pressures and thermophysical properties of selected ethanolamines. Fluid Phase Equilibria. ISSN 0378-3812. 473, p. 245-254