Amine degradation in CO₂ capture. 3. New degradation products of MEA in liquid phase: Amides and nitrogenous heterocycles

C. Gouedard (1) , A. Rey (2) , V. Cuzuel , J. Brunet (2) , B. Delfort , D. Picq (1) , J. Dugay , J. Vial , Valérie Pichon , Franck Launay , L. Assam , J. Ponthus , P. -L. Carrette

1 IFPEN - IFP Energies nouvelles
2 LSABM - Laboratoire Sciences Analytiques, Bioanalytiques, et Miniaturisation

To reduce greenhouse gas emissions from fossil fuel power plants, post combustion CO2 capture with amine-based solvent is the most mature technology. Ethanolamine (MEA), the benchmark amine, is the most studied amine but some degradation products are still unknown and for an environmental acceptance, it is important to identify them. In this work eleven amides and nitrogenous heterocycles were identified in a pilot plant liquid sample. Among them seven molecules were never reported in literature. Different analytical methods were developed especially HS-SPME coupled to GC/MS. Mechanisms of formation were proposed for each molecule and were validated in most cases.

Mots clés: HS-SPME coupled with GC/MS; Mechanisms; Post-combustion CO2 capture; Ethanolamine (MEA) degradation; Nitrogenous heterocycles; Amides

Domaines: Chimie

C. Gouedard, A. Rey, V. Cuzuel, J. Brunet, B. Delfort, et al.. Amine degradation in CO₂ capture. 3. New degradation products of MEA in liquid phase: Amides and nitrogenous heterocycles. International Journal of Greenhouse Gas Control, 2014, 29, pp.61-69. ⟨10.1016/j.ijggc.2014.07.013⟩. ⟨hal-01502562⟩