Measurement of the reaction enthalpy of CO2 in aqueous solutions with thermographic and gravimetric methods

In this work, a new concept for the approximate determination of the reaction enthalpy of the reaction between CO 2 and monoethanolamine (MEA) in aqueous solution was developed. For this purpose, a CO 2 gas stream was flowed into aqueous MEA solutions with different concentrations of 1 wt%, 2.5 wt%...

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Bibliographic Details
Published in:Scientific reports 2024-05, Vol.14 (1), p.10373-10373, Article 10373
Main Authors: Jung-Fittkau, Jessica, Diebold, Josef, Kruse, Andrea, Deigner, Hans-Peter, Schmidt, Magnus S.
Format: Article
Language:English
Subjects:
639/638/11
639/638/403
639/638/440
704/172
Aqueous solutions
Cameras
Carbon dioxide
Chemical reactions
CO2 capturing
Emission standards
Emissions
Energy
Enthalpy
Experiments
Gravimetry
Greenhouse gases
Heat
Humanities and Social Sciences
Industrial plant emissions
MEA
multidisciplinary
Reaction enthalpy
Science
Science (multidisciplinary)
Thermography
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Summary:In this work, a new concept for the approximate determination of the reaction enthalpy of the reaction between CO 2 and monoethanolamine (MEA) in aqueous solution was developed. For this purpose, a CO 2 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 CO 2 bound by the MEA over time, was documented using a thermographic camera. The mass difference ∆m, which is also based on the increase in CO 2 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.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-024-61242-9