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

Solution-based amine absorption technologies have been widely applied for CO2 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 CO2 adsorption capacity as the natural zeolite. The strength of the interaction between CO2 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 CO2 adsorption and separation.

Automated summary

This study reports the synthesis of a solid-state amine adsorbent using natural mordenite-clinoptilolite zeolite as the base material, prepared through plasma polymerization and deposition. The plasma deposition technique significantly increases the CO2 adsorption capacity and may facilitate regeneration, making the amine plasma polymer-based zeolite adsorbent a promising candidate for CO2 capture and separation applications.