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

Abstract Post-combustion CO 2 capture in flue gas with solvent is currently the most advanced technology. A major problem associated with chemical absorption of CO 2 using the benchmark ethanolamine (MEA) is solvent degradation through irreversible side reactions with CO 2 and O 2 . 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, CO 2 , and O 2 on degradation have been studied. Knowledge of degradation products and main reactions allows a better understanding of amines chemical stability for CO 2 capture application.

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