Abstract
Various amounts of tetraethylenepentamine (TEPA) loading on mesocellular silica foams (TEPA‐MSF‐x) were fabricated via a chemical grafting method in this study. The performance of dry 15% CO2 adsorption on the TEPA‐MSF‐x was tested by a microbalance at 348 K under ambient pressure. Experimentally, CO2 adsorption capacities of the TEPA‐MSF‐x sorbents were found to be 28.5–66.7 mg CO2/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. This significant enhancement in the stability of CO2 adsorption‐desorption process was most likely due to the decreased leaching of TEPA which is covalently tethered to the surface of MSF.
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