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Heat capacities of different amine aqueous solutions at pressures up to 25 MPa for CO2 capture Concepción Rodríguez, Eduardo Iván Moreau Ortega, Alejandro Vega Maza, David Paredes Mendez, Xavier Martín González, María del Carmen Física Calorímetros y calorimetría Heat capacities Monoethanolamine (MEA) Diethanolamine (DEA) Triethanolamine (TEA) Capacidades de calor Monoetanolamina (MEA) Dietanolamina (DEA) Trietanolamina (TEA) 22 Física Producción Científica 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. Junta de Castilla y León - EU-FEDER (VA280P18 y CLU-2019-04) Fellowship “Beatriz Galindo Senior” (BEAGAL18/00259) 2023-03-08T09:16:37Z 2023-03-08T09:16:37Z 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Journal of Molecular Liquids, 2023, vol. 377, 121575 0167-7322 https://uvadoc.uva.es/handle/10324/58882 10.1016/j.molliq.2023.121575 121575 Journal of Molecular Liquids eng https://www.sciencedirect.com/science/article/pii/S0167732223003781?via%3Dihub Attribution-NonCommercial-NoDerivatives 4.0 Internacional info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ © 2023 The Authors application/pdf Elsevier https://uvadoc.uva.es/bitstream/10324/58882/5/Heat-capacities-of-different-amine.pdf.jpg Hispana TEXT http://creativecommons.org/licenses/by-nc-nd/4.0/ UVaDOC. Repositorio Documental de la Universidad de Valladolid https://uvadoc.uva.es/handle/10324/58882