Products and process variables in oxidation of monoethanolamine for CO2 capture

► Manganese is a potent catalyst for MEA oxidation in CO2 capture. ► The activation energy for MEA oxidation is 68 kJ/mol. ► CO2 is a catalyst for MEA oxidation at 0-0.3 loading, and an inhibitor at 0.3-0.4 loading. ► Two-thirds of oxidized MEA was converted to ammonia.