Advanced CO₂ Capture from Flue Gas by Promoting Amine Solvent Regeneration Using Dual-Functional Graphitized Packing

Catalytic amine solvent regeneration has emerged as an effective strategy to enhance the CO₂ reaction kinetics at mild temperatures. However, the current powder catalysts face challenges of heat transfer limitations and weak durability in the practical packing stripper.

Herein, we prepared a dual-functional stainless-steel packing with efficient heat transfer and catalytic activity through an <i>in situ</i> carbon modification strategy from an industrial perspective. The micron-thick graphitic carbon layer increases the heat conduction rate by 61.7%, while the active Fe sites (Fe–O–C) within the carbon layer reduce the energy barrier for CO₂ desorption by 36.5%. Moreover, the catalytic packing exhibits universal applicability for various amine solvents and excellent stability during a four-week hydrothermal experiment.