Abstract
Silica dioxide (SiO2) can be modified by impregnating amine-containing compound to improve CO2 adsorption capacity. Octadecylamine (ODA) was supported on silica dioxide particles. The amine-modified samples were characterized using FTIR, BET and XRD. Carbamate ion pair formation on surface of adsorbents was analyzed by XPS. Reactivity of solid sorbents towards CO2 was evaluated using isothermal CO2 adsorption by BET. This study shows 25 wt % ODA/SiO2 can adsorb 2.45 wt % CO2/adsorbent is slightly higher in adsorbing CO2 compared to pure SiO2 which only adsorb 1.85 wt % CO2/adsorbent.
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