Synthesis of Stable Tetraethylenepentamine-Functionalized Mesocellular Silica Foams for CO 2 Adsorption

Various amounts of tetraethylenepentamine (TEPA) loading on mesocellular silica foams (TEPA-MSF-x) were fabricated via a chemical graing method in this study. e performance of dry 15% CO 2 adsorption on the TEPA-MSF-x was tested by a microbalance at 348 K under ambient pressure. Experimentally, CO 2 adsorption capacities of the TEPA-MSF-x sorbents were found to be 28.5-66.7 mg CO 2 /g-sorbent. In addition, TEPA-MSF-x sorbents exhibited enhanced durability during repeated adsorption-desorption cycles compared to the conventional sorbents prepared by a physical impregnation method. is signi�cant enhancement in the stability of CO 2 adsorption-desorption process was most likely due to the decreased leaching of TEPA which is covalently tethered to the surface of MSF