Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/76172
Título
Measurement of high-pressure properties for aqueous solutions of amines: Densities and isobaric heat capacities of 3-(methylamino)propylamine and 1-methylpiperazine binary mixtures
Autor
Año del Documento
2025
Editorial
Elsevier
Descripción
Producción Científica
Documento Fuente
Journal of Molecular Liquids, 2025, vol. 430, p. 127685
Zusammenfassung
The density and isobaric heat capacity of 3-(methylamino)propylamine (MAPA) + H2O and 1-methylpiperazine
(1-MPZ) + H2O mixtures were measured using a vibrating tube densimeter and a flow calorimeter, respectively.
Density measurements were carried out with a relative expanded uncertainty of 0.1 % (k = 2) over a wide range
of temperatures (from 293.15 K to 393.15 K), pressure up to 100 MPa, and amine mass fractions of 0.1, 0.2, 0.3,
and 0.4. Isobaric heat capacity experimental data was acquired with a relative expanded uncertainty better than
1 % (k = 2). These measurements reached pressures up to 25 MPa and temperatures from 293.15 K to 353.15 K,
in the same amine mass fractions compositions. A modified Tammann-Tait empirical equation was used to
develop density correlation as a function of temperature, pressure, and molality. Additionally, an empirical
function of temperature and amine mass fraction was used to fit the isobaric heat capacity data. Both correlations
showed good agreement with the experimental data of the aqueous amine solutions under study, within 0.1 % for
density correlation and 1 % for isobaric heat capacity correlation. Compared to the limited experimental data
found in literature, the deviations observed were smaller than the reported uncertainties.
Materias Unesco
22 Física
Palabras Clave
Sobaric heat capacity
Density
High pressure
MAPA + H2O
1-MPZ + H2O
ISSN
0167-7322
Revisión por pares
SI
Patrocinador
Junta de Castilla y León y cofinanciado por el programa “Europa impulsa nuestro crecimiento” (CLU-2019-04)
Version del Editor
Propietario de los Derechos
© 2025 The Author(s)
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
Aparece en las colecciones
Dateien zu dieser Ressource
Tamaño:
760.5Kb
Formato:
Adobe PDF
