Surface Area of Activated Carbon Determined by the Iodine Adsorption Number

Abstract

The specific surface area determination of activated carbons by means of the low-temperature argon adsorption (the BET method) was compared with the measurement of the surface area based on the adsorption of I₂ from the aqueous KI solution. It is proposed to recalculate the iodine adsorption number for the BET surface area. It is shown that the S_IN method can be used for a quick estimation of the structure development of porous carbonaceous materials.

Keywords:

• activated carbons
• iodine adsorption number (IN)
• specific surface area (S_BET)

Acknowledgements

Partial support of this work referring to the part realized by AGH (No.10.10.210.52) has been greatly appreciated.

Notes

^a According to Polish Standard (PN-82/G-97002). Elementary analysis of carried out automatically (Perkin Elmer CHNS 2400, according to Polish Standard PN-85/G-14549).

^a According to Pauling (Van Meerssche 1976).