RT info:eu-repo/semantics/article
T1 Heat capacities of different amine aqueous solutions at pressures up to 25 MPa for CO2 capture
A1 Concepción, Eduardo I.
A1 Moreau Ortega, Alejandro
A1 Vega Maza, David
A1 Paredes Méndez, Xavier
A1 Martín González, María del Carmen
K1 Física
K1 Calorímetros y calorimetría
K1 Heat capacities
K1 Monoethanolamine (MEA)
K1 Diethanolamine (DEA)
K1 Triethanolamine (TEA)
K1 Capacidades de calor
K1 Monoetanolamina (MEA)
K1 Dietanolamina (DEA)
K1 Trietanolamina (TEA)
K1 22 Física
AB A high-pressure flow calorimeter is used to determine isobaric heat capacities for aqueous solutions of some amines such as MEA, DEA TEA, DMAE, MDEA, PZ from T = (293.15 to 353.15) K and up to 25 MPa. The experimental device can measure heat capacities with an estimated total uncertainty better than 1% for a coverage factor k = 2. The isobaric heat capacity values are analysed in conjunction with their temperature and pressure dependencies. Furthermore, empirical equations are proposed to fit isobaric heat capacities as functions of temperature and pressure for given conditions, for this kind of mixtures, obtaining standard deviations within the uncertainty of the measurements. Finally, DMAE shows the highest value of heat capacity and TEA the lowest value, when they are compared at the same conditions of temperature, pressure and composition.
PB Elsevier
SN 0167-7322
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/58882
UL https://uvadoc.uva.es/handle/10324/58882
LA eng
NO Journal of Molecular Liquids, 2023,vol. 377, 121575
NO Producción Científica
DS UVaDOC
RD 24-nov-2024