Regenerability of zeolites as adsorbents for natural gas sweetening: A case-study

[Display omitted] ► We have provided adsorption data over wide range conditions. ► We have shown correlations among zeolite adsorption features and their composition. ► Reported results are in agreement with previous studies on other adsorbents. Zeolite adsorbents are widely used for the removal of contaminants from natural gas. Typically, raw natural gas is passed through packed columns, obtaining a methane-rich stream suitable for pipeline transmission or further processing. After defined service time, bed regeneration is requested. Adsorbent chemical composition is a key parameter influencing both specific capacity and regenerability. A case-study, concerning Na-FAU zeolites applied for carbon dioxide bulk removal from natural gas, is discussed.