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 07-ago-2024