Catalytic carbon dioxide absorption and stripping using nanofibrous membrane contactors

Abstract

Catalyst-assisted CO2 capture processes are developed using membrane gas-solvent contactors. While chemical absorption-based capture methods are among the most practical for CO2 capture, they are generally regarded as energy-intensive, particularly for the regeneration of CO2-rich solvents. Herein, we propose catalytic membrane-based CO2 absorption and desorption processes which significantly lower the solvent regeneration temperature and offer additional CO2 sorption sites within mesoporous MCM-41 based catalysts. The incorporation of membrane gas-solvent contactors with hydrophobic polymer nanofibres enhances CO2 transfer by creating a larger mass transfer area. The resulting catalytic CO2..