CO₂ adsorption/desorption on mesoporous silica at various pressures

Abstract

CO₂ adsorption/desorption on zeolite X and mesoporous silica (MCM-41) was examined under high pressure up to 950 kPa for carbon capture and storage (CCS). The pressure swing adsorption (PSA) method for CO2 separation and capture was used, because of its energy efficiency. In the range of 100-950 kPa, the amounts of CO₂ adsorbed on MCM-41 and zeolite X were 14.6 wt% and 5.4 wt%, respectively. The amount of CO₂ adsorbed on MCM-41 was 2.5 times greater than that of zeolite X with respect to atmospheric pressure.