Preparation of activated carbons by microwave heating KOH activation
Preparation of activated carbons by microwave heating KOH activation
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DOI：
10.1016/j.apsusc.2007.06.034
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发表时间：
2007-09-15
影响因子：
6.7
通讯作者：
Lin, Qiang
中科院分区：
文献类型：
--
作者：
Ji, Yongbin;Li, Tiehu;Lin, Qiang
通过微波 (MW) 加热的 KOH 活化工艺制备了具有高表面积的活性炭。作为比较，活性炭也通过传统的加热（EF）方法制备。研究了KOH/中间相碳微珠(MCMB)重量比和活化时间对活性炭孔隙性质的影响。对于 MW 和 EF 加热方法，随着 KOH/MCMB 比率的增加，表面积和孔体积先增加到最大值，然后减少。活化时间对孔隙性质的影响取决于 KOH/MCMB 比率。当KOH/MCMB比相同时，MW加热制备的活性炭比EF加热制备的活性炭具有更高的表面积和更大的孔容。 MW加热方法大大缩短了活化时间。通过MW加热制备的活性炭显示出低含量的含氧基团。 (c) 2007 Elsevier B.V. 保留所有权利。
Activated carbons with high surface areas were prepared via KOH activation process by microwave (MW) heating. As a comparison, activated carbons were also prepared by conventional heating (EF) method. The influences of KOH/Mesocarbon microbeads (MCMB) weight ratio and activation time on the pore properties of the activated carbons were investigated. For both MW and EF heating methods, the surface area and pore volume increase to a maximum and then decrease with the KOH/MCMB ratio increasing. The effects of activation time on the pore properties depend on the KOH/MCMB ratio. The activated carbons prepared by MW heating have higher surface area and larger pore volume than those by EF heating when KOH/MCMB ratio is the same. The MW heating method shortens the activation time considerably. Activated carbons prepared by MW heating show low content of oxygen containing groups. (c) 2007 Elsevier B.V. All rights reserved.