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oai:uvadoc.uva.es:10324/261452025-03-07T08:27:59Zcom_10324_1170com_10324_931com_10324_894col_10324_1367

Viscosity and density measurements of aqueous amines at high pressures: MDEA-water and MEA-water mixtures for CO2 capture Sobrino García, Manuel Concepción Rodríguez, Eduardo Iván Gómez Hernández, Ángel Martín González, María del Carmen Termodinámica Viscosity and density are thermophysical properties crucial to characterizing any kind of fluid such as aqueous amines. These blends are becoming more and more relevant for their CO2 capture potential, such that having accurate viscosity and density measurements would prove useful. Densities and viscosities of these mixtures at atmospheric pressure may be found in the literature although it is more difficult to find values at high pressures, these potentially proving interesting when seeking to provide a full description of these fluids. Viscosity and density measurements at high pressures (up to 120 MPa) and at temperatures between 293.15 and 353.15 K of MDEA + water and MEA + water mixtures (both from 10 % to 40 % amine mass fraction) are presented in this work. Density measurements were performed with an Anton Paar DMA HPM densimeter with an expanded uncertainty (k = 2) less than ± 0.7 kg·m-3. A falling body technique was used to measure viscosities at high pressures due to its sturdiness in terms of corrosion. Details of this latter equipment are presented, including calibration using n-dodecane and uncertainty calculations, which give a relative expanded uncertainty (k = 2) of less than ± 2.4 % for the highest viscosity and ± 2.9 % for the lowest. 2018-03-15T00:40:29Z 2018-03-15T00:40:29Z 2018-03-15T00:40:29Z 2016 info:eu-repo/semantics/article J. Chem. Thermodynamics, march 2016, vol.98 p. 231–241 0021-9614 http://uvadoc.uva.es/handle/10324/26145 10.1016/j.jct.2016.03.021 231 241 Viscosity and density measurements of aqueous amines at high pressures: MDEA-water and MEA-water mixtures for CO2 capture 98 eng info:eu-repo/semantics/openAccess Elsevier