Degradation study of new solvents for CO2 capture in post-combustion

Abstract

Post-combustion CO2 capture in flue gas with solvent is currently the most advanced technology. A major problem associated with chemical absorption of CO2 using the benchmark ethanolamine (MEA) is solvent degradation through irreversible side reactions with CO2 and O2. So, new amines development with higher chemical stability becomes essential. This work is based on chemical stability study of 17 different molecules: alkanolamines, diamines, and triamines without alcohol function. Effects of temperature, CO2, and O2 on degradation have been studied. Knowledge of degradation products and main reactions allows a better understanding of amines chemical stability for CO2 capture application.