Amine‐functionalized natural zeolites prepared through plasma polymerization for enhanced carbon dioxide adsorption

Solution‐based amine absorption technologies have been widely applied for CO 2 capture, but they have several drawbacks. This paper reports on the synthesis of the first solid‐state amine adsorbent prepared through a simple plasma polymerization and deposition on physicochemically modified natural mordenite–clinoptilolite zeolite. The plasma deposition of amine polymer under certain conditions resulted in a significant increase in surface area‐weighted CO 2 adsorption capacity as the natural zeolite. The strength of the interaction between CO 2 and the adsorbent was weaker for the plasma polymer‐modified zeolite than without the plasma coating, which may facilitate regeneration. Both indications make the amine plasma polymer‐based zeolite adsorbent a good candidate for CO 2 adsorption and separation.