RT info:eu-repo/semantics/article
T1 Measurement of high-pressure properties for aqueous solutions of amines: Densities and isobaric heat capacities of 3-(methylamino)propylamine and 1-methylpiperazine binary mixtures
A1 Pérez Milian, Yisel
A1 Vega Maza, David
A1 Arroyave Roa, Juan Diego
A1 Velez Jaramillo, Jhon Fredy
A1 Paredes Mendez, Xavier
A1 Moreau Ortega, Alejandro
K1 Sobaric heat capacity
K1 Density
K1 High pressure
K1 MAPA + H2O
K1 1-MPZ + H2O
K1 22 Física
AB 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 rangeof 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 than1 % (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 todevelop density correlation as a function of temperature, pressure, and molality. Additionally, an empiricalfunction of temperature and amine mass fraction was used to fit the isobaric heat capacity data. Both correlationsshowed good agreement with the experimental data of the aqueous amine solutions under study, within 0.1 % fordensity correlation and 1 % for isobaric heat capacity correlation. Compared to the limited experimental datafound in literature, the deviations observed were smaller than the reported uncertainties.
PB Elsevier
SN 0167-7322
YR 2025
FD 2025
LK https://uvadoc.uva.es/handle/10324/76172
UL https://uvadoc.uva.es/handle/10324/76172
LA eng
NO Journal of Molecular Liquids, 2025, vol. 430, p. 127685
NO Producción Científica
DS UVaDOC
RD 17-ago-2025