TY - JOUR
T1 - Thermophysical Behavior of Carbonated Aqueous Solutions Containing Monoethanolamine and Degradation Products
AU - Hernández Narciso, Clàudia Rosa
AU - Martínez, Cristina G.
AU - O’Connell, Brendan
AU - Rodriguez Reartes, Sabrina Belén
AU - Llovell, Fèlix
AU - Trusler, J. P.Martin
AU - Sedransk Campbell, Kyra L.
N1 - Publisher Copyright:
© 2024 American Chemical Society.
PY - 2024/10/10
Y1 - 2024/10/10
N2 - The impact of the degradation of monoethanolamine (MEA) on the physicochemical properties of the solvent is experimentally characterized. Based on the identification of three main degradation products of MEA: oxazolidine-2-one (OZD), N-(2-hydroxyethyl)ethylenediamine (HEEDA), and 1-(2-hydroxyethyl)-2-imidazolidinone (HEIA), new measurements for the density, surface tension, and viscosity of partially carbonated solutions containing water, MEA and those products were conducted at different MEA/degradation product molar ratios. The experiments covered a temperature range from 298.15 to 353.15 K at atmospheric pressure. The more stable and impactful degradation product, HEIA, was analyzed separately to determine its vapor pressure, as well as the density and viscosity of aqueous solutions with HEIA mass fractions of 100, 75, 50, and 25% in the same temperature range. The reported data demonstrate the difference in the performance of aqueous MEA solutions containing degradation products as compared to a fresh solution. This aspect is crucial for understanding the impact and effectiveness of postcombustion CO2 capture using aqueous amine systems in an industrial setting.
AB - The impact of the degradation of monoethanolamine (MEA) on the physicochemical properties of the solvent is experimentally characterized. Based on the identification of three main degradation products of MEA: oxazolidine-2-one (OZD), N-(2-hydroxyethyl)ethylenediamine (HEEDA), and 1-(2-hydroxyethyl)-2-imidazolidinone (HEIA), new measurements for the density, surface tension, and viscosity of partially carbonated solutions containing water, MEA and those products were conducted at different MEA/degradation product molar ratios. The experiments covered a temperature range from 298.15 to 353.15 K at atmospheric pressure. The more stable and impactful degradation product, HEIA, was analyzed separately to determine its vapor pressure, as well as the density and viscosity of aqueous solutions with HEIA mass fractions of 100, 75, 50, and 25% in the same temperature range. The reported data demonstrate the difference in the performance of aqueous MEA solutions containing degradation products as compared to a fresh solution. This aspect is crucial for understanding the impact and effectiveness of postcombustion CO2 capture using aqueous amine systems in an industrial setting.
UR - https://www.scopus.com/pages/publications/85192812742
U2 - 10.1021/acs.jced.4c00077
DO - 10.1021/acs.jced.4c00077
M3 - Article
AN - SCOPUS:85192812742
SN - 0021-9568
VL - 69
SP - 3435
EP - 3449
JO - Journal of Chemical and Engineering Data
JF - Journal of Chemical and Engineering Data
IS - 10
ER -