Study on Applicability of New Adsorbent CeO2 to CO2 Removal Systems Resulting in Decrease of Volume, Weight, and Power Consumption

This paper presents a feasibility study on the use of cerium oxide (CeO2) as a novel adsorbent in CO2 removal systems for cabin air revitalization. CeO2 offers potential advantages because its CO2 adsorption capacity remains stable in the presence of water vapor, and CO2 desorption can occur at lower temperatures compared to conventional zeolite 13X. These characteristics suggest that a CeO2-based system may reduce the overall volume, weight, and power consumption of CO2 removal units. A CO2 removal test was conducted using a prototype model incorporating the CeO2 adsorbent, and fundamental data on its adsorption and desorption performance were obtained. This paper discusses the results of this evaluation.