Browsing by Subject "MEA"

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Measurement of the reaction enthalpy of CO₂ in aqueous solutions with thermographic and gravimetric methods
(2024) Jung-Fittkau, Jessica; Diebold, Josef; Kruse, Andrea; Deigner, Hans-Peter; Schmidt, Magnus S.; Jung-Fittkau, Jessica; Organic and Bioorganic Chemistry Labs, Medical and Life Sciences Faculty, Institute of Precision Medicine, Furtwangen University, Jakob-Kienzle-Str. 17, 78054, Villingen-Schwenningen, Germany; Diebold, Josef; Organic and Bioorganic Chemistry Labs, Medical and Life Sciences Faculty, Institute of Precision Medicine, Furtwangen University, Jakob-Kienzle-Str. 17, 78054, Villingen-Schwenningen, Germany; Kruse, Andrea; Institute of Agricultural Technology, University of Hohenheim, Schloß Hohenheim 1, 70599, Stuttgart, Germany; Deigner, Hans-Peter; Organic and Bioorganic Chemistry Labs, Medical and Life Sciences Faculty, Institute of Precision Medicine, Furtwangen University, Jakob-Kienzle-Str. 17, 78054, Villingen-Schwenningen, Germany; Schmidt, Magnus S.; Organic and Bioorganic Chemistry Labs, Medical and Life Sciences Faculty, Institute of Precision Medicine, Furtwangen University, Jakob-Kienzle-Str. 17, 78054, Villingen-Schwenningen, Germany
In this work, a new concept for the approximate determination of the reaction enthalpy of the reaction between CO2 and monoethanolamine (MEA) in aqueous solution was developed. For this purpose, a CO2 gas stream was flowed into aqueous MEA solutions with different concentrations of 1 wt%, 2.5 wt% and 7.5 wt%. The weight difference ∆T, which is based on the increase in CO2 bound by the MEA over time, was documented using a thermographic camera. The mass difference ∆m, which is also based on the increase in CO2 bound by the MEA over time, was determined using a balance. By determining ∆T and ∆m, an approximate calculation of the reaction enthalpy is possible. The deviation from the values from the data known from the literature was less than 5% in all experiments.