Novel activation process for preparing highly microporous and mesoporous activated carbons
Novel activation process for preparing highly microporous and mesoporous activated carbons
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DOI：
10.1016/s0008-6223(00)00198-6
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发表时间：
2001-01-01
期刊：
影响因子：
10.9
通讯作者：
Ni, YM
中科院分区：
文献类型：
--
作者：
Hu, ZH;Srinivasan, MP;Ni, YM
提出了一种改进的 ZnCl2 化学活化方法来生产高孔隙度活性炭。该新工艺可以从木质纤维素材料生产微孔碳或中孔碳。例如椰子壳和棕榈种子。所得活性炭的孔隙率由77 K 的氮吸附等温线表征。炭的BET 表面积可超过2400 m(2)/g；中孔含量(中孔体积与总孔体积之比)为71%。此外，棕榈籽活性炭的中孔含量高达94%。采用热重分析（TGA）监测椰壳和氯化锌浸渍椰壳的热解过程。测试了对苯酚和染料的吸附性能。 (C) 2001 Elsevier Science Ltd. 保留所有权利。
An improved ZnCl2-chemical activation method is proposed to produce highly porous activated carbons. The novel process can produce either microporous carbons or mesoporous carbons from lignocellulosic materials. such as coconut shells and palm seeds. The porosity of the resultant activated carbons was characterized by nitrogen adsorption isotherms at 77 K. The BET-surface area of the carbons can be over 2400 m(2)/g; the mesopore content (ratio of mesopore volume to total pore volume) is 71%. Furthermore, the activated carbon from palm seeds possesses mesopore content as high as 94%. Thermogravimetric analysis (TGA) was used to monitor the course of pyrolysis of coconut shell and ZnCl2-impregnated coconut shell. The adsorptive properties for phenol and dyes were tested. (C) 2001 Elsevier Science Ltd. All rights reserved.