机械力化学法制备磷酸法竹基活性炭(英文)

Preparation of Phosphoric Acid Activated Carbon from Bamboo by Mechanochemical Process

以竹材为原料,磷酸为活化剂,采用机械力化学法制备了竹基活性炭。以碘吸附值、亚甲基蓝吸附值为指标,着重探讨球磨时间对竹基活性炭物质结构和吸附性能的影响。结果表明,通过机械力化学法可提高竹基活性炭的吸附性能,其碘吸附值、亚甲基蓝吸附值和比表面积分别从传统化学法的840.16 mg/g、168 mg/g、1 229.246 m2/g提高至947.51 mg/g、195 mg/g和1 265.373 m2/g。

Activated carbon was prepared from bamboo by mechanochemical process with phosphoricacid as activating agent. The effects of milling time on the adsorption property and porous structure of the obtained activated car- bon were discussed. The results showed that phosphoric acid activation assisted by mechanochemical process can slightly improve the adsorption performance of the prepared activated carbon. The iodine, methylene blue adsorption value and the specific surface area of the prepared activated carbons increased from 840.16 mg/g, 168 mg/g and 1 229. 246 m2/g to 947.51 mg/g, 195 mg/g, and 1 265. 373 m2/g, respectively. Compared with conventional phosphoric acid activation, the activated carbon produced by mechanochemical process has greater adsorption capacity.