Selectivity of CO2 adsorption using La and Ce modified X zeolite

https://doi.org/10.1016/j.jmrt.2020.02.061

“The adsorption performance and selectivity of N₂ and O₂ are indispensable for the exploration of the practical properties of the adsorbent. Adsorption selectivity of CO₂/N₂ and CO₂/O₂ is shown in Fig. 8. The CO₂/N₂ selectivity of the modified zeolite is increased, and the CO₂/O₂ selectivity is reduced, compared to NaX. The CO₂/N₂ selectivity of LaNaX has increased the most, more than three times. The CO₂/O₂ selectivity of CeLiX is reduced by a maximum of about two times. It is because the amount of N₂ adsorption of LaNaX is greatly reduced, and the O₂ adsorption amount of the Ce ion-modified zeolite is increased upward. ”

“Fig. 8. Adsorption selectivity of the samples for (a) CO₂/N₂ and (b) CO₂/O₂.”