【摘要】 研究了以核桃壳为原料,采用水蒸气活化法制备活性炭工艺。讨论了活化温度、活化时间和水蒸气流量对活性炭的得率和吸附性能的影响,得到了最佳工艺条件:活化温度为85 0℃,活化时间为90min ,水蒸气流量为0 .4 5L/min ,所制备的活性炭得率为2 0 .0 7% ,碘吸附值为10 4 8.96mg/g ,亚甲基蓝吸附值为12ml/ 0 .1g。同时,对水蒸气活化制备活性炭过程的反应机理进行了初步探讨。更多还原

【Abstract】 The study explore that activated carbon is prepared from walnut shells by water vapor.The effects of activation temperature,activation time and flow rate of water vapor on the adsorption properties and yield of activated carbon were investigated.The iodine number,methylene blue adsorption and yield of the activated carbon manufactured under the optimum conditions of activation temperature 850℃,activation time 90 min and the flow rate of water vapor 0.45L/min were 1 048.96mg/g ,12ml/0.1g and 20.07% respectively.Furthermore,the reaction mechanism of activated carbon preparation was discussed.更多还原