111-75-1

2-(butylamino)ethanol (BAE) is a secondary amine and has steric hindrance with a strong tendency to form bicarbonate on reaction with CO2. As a result, equilibrium CO2 loading can exceed 0.5 mol CO2/mol amine, resulting in higher cyclic capacity than conventional MEA. BAE's hydrophobicity is very high and highly soluble with most amines and ethers. The advantages of preferring BAE over traditional 2-amino-2-methyl-1-propanol (AMP) are that BAE does not produce solid precipitation on CO2 loading, CO2 absorption and reaction rate of BAE is higher than AMP, it can be regenerated at low temperature, low heat of CO2 absorption and BAE is cheaper than AMP[1].

Colorless liquid

[1] Ashish Gautam, Monoj Kumar Mondal. “Novel aqueous amine blend of 2-(Butylamino)ethanol and 2-Dimethylaminoethanol for CO2 capture: Equilibrium CO2 loading, RSM optimization, desorption study, characterization and toxicity assessment.” Separation and Purification Technology 322 (2023): Article 124279.