Abstract: An attempt was practised to gain activated carbon of high specific surface area.The bamboo char was activated in an inert environment with excessive potassium hydroxide under different activation conditions.The effects of carbonization temperature,activation temperature,ratio between potassium hydroxide and bamboo char on the yield and adsorption properties of the resultant activated carbon were investigated.The micropore structure and pore size distribution of the resultant activated carbon were also studied.The activated carbon,made under the conditions of carbonization temperature 700℃,activation temperature 900℃,ratio of potassium hydroxide to the bamboo char 4,activation time 1 h,possesses high specific surface area 2 610 m²/g,and high iodine and methylene blue adsorption value,2 300 mg/g and 570 mg/g,respectively,which are 2-3 times as much as those of ordinary ones.

Key words: activated carbon, bamboo, specific surface area, micropore structure