摘要
以竹节为原料 ,采用KOH化学活化法制备高比表面积活性炭。研究了炭化温度、活化温度和KOH与竹节炭的质量比对活性炭的收率和吸附性能的影响 ,并对所得活性炭的比表面积和微孔结构进行了初步探讨。结果表明 :在炭化温度为 70 0℃、碱 /炭质量比为 4、活化温度为 90 0℃、活化时间为 1h时可制得比表面积为 2 610m2 /g的高比表面积活性炭 ,其碘吸附值为2 30 0mg/g、亚甲基蓝值为 5 70mg/g ,均为普通活性炭的 2～ 3倍。
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 m 2 /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.
出处
《林产化学与工业》
EI
CAS
CSCD
2001年第4期11-15,共5页
Chemistry and Industry of Forest Products
