荞麦壳活性炭的制备及其表征

Preparation and characterization of buckwheat shell activated carbon

以荞麦壳为原料,以KOH活化法制备活性炭,研究了炭化时间、炭化温度对活性炭性能的影响。结果表明:在活化条件不变的情况下,炭化时间和炭化温度对活性炭性能具有重要影响,制备活性炭的较优工艺参数为:炭化时间为3h,炭化温度为500℃。同时,制备得到的活性炭比表面积为1436.047m^2/g,碘吸附值为1528.61mg/g。

Activated carbon was prepred from buckwheat shell by KOH activation.The effects of carbonization time,carbonization temperature on the properties of activated carbon were studied.The experimental results showed that the activation conditions remained unchanged,the carbonization time and temperature had an important effect on the properties of activated carbon.The optimum technological parameters for preparing activated carbon were carbonization time of 3H and carbonization temperature of 500℃.At the same time,the prepared activated carbon had the specific surface area of 1436.047m^2/g and the iodine adsorption value of 1528.61mg/g.