In this group of experiments, the sample was activated by boiling it
with chemical reagents of NaOH and KOH. The reagents, ZnCl2,
Na2CO3 and H3PO4, resulted in activated carbon having low iodine
number in the first group experiments were eliminated. The sample
was put into a volumetric flask with 50% chemical reactive solution
so that impregnation ratio between chemical reagents and
precursor is 1/1. A condenser was mounted to the flask to prevent
evaporation. The mixture was boiled at 120° C for 10 h in an oil
bath. At the end of this period, the mixture was cooled, filtrated by
vacuum and then dried at 100° C for 24 h. The carbonization
process was applied to the sample after the activation process. The
effect of temperature on carbonization was investigated by
selecting furnace final temperature as 600, 700, 800, 900 and
1000° C. The furnace was programmed in such a way that heating
rate shall be 5° C/min and after reaching the final temperature it will
then remain at that temperature for 2 h.