https://doi.org/10.1016/j.egypro.2017.03.1211
“Table 3 shows the heat of absorption of the five stand-alone amine solutions measured at 313.15K and atmospheric
pressure tested on URC. Reported results were carried out at least 5 times to ensure accuracy and obtain consistent
values. The absorption capacity data reported in table 3 are obtained from URC not form SSS with a feed of pure CO2.
The aim of this study is to find a solvent with high CO2 loading and minimum heat of absorption the does not increase
the reboiler duty. Secondary amines tend to from stable carbamate which results in high absorption capacity in
comparison with tertiary amines that usually form an unstable carbamate. The heat of absorption of MEA is –
85.13kJ/mol of CO2 which is the reason of the high energy requirement for the capture process. So it has been assumed
that -70kJ/mol of CO2 will be the limit of the heat of absorption. Therefore anything below -70kJ/mol of CO2 would
be acceptable. By looking on the amines on this study 2MAE beats the limit.
2MAE demonstrates CO2 loading up to 0.60 and a heat of absorption below 70 kJ/mole of CO2, also and thus seem
to be a potential candidate for CO2 capture application.”
