With FeCl3 as catalyst, the raw carbon (LAC) was successfully modified by CO2 used as activation agents. The adsorption performance of the activated carbon (AC) was characterized by ethanol, methylene blue and VB12. The pore structure of AC was measured by N2 at 77K. The pore distribution was characterized by DFT and the BET specific surface area of AC was calculated. Results show that the BET specific surface area and the total volume of the modified activated carbon increase considerably. Thus the adsorptive capacity of AC increases significantly. Furthermore, the pore distribution of AC becomes more even.
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