Preparation of activated carbons by microwave heating KOH activation

被引：192

作者：

Ji, Yongbin ^{[1
]}

Li, Tiehu ^{[1
]}

Zhu, Li ^{[1
]}

Wang, Xiaoxian ^{[1
]}

Lin, Qiang ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Dept Mat Sci & Engn, Xian 710072, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2007年 / 254卷 / 02期

基金：

中国国家自然科学基金;

关键词：

activated carbon; microwave (MW); mesocarbon microbeads (MCMB); KOH; high surface area;

D O I：

10.1016/j.apsusc.2007.06.034

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：506 / 512

页数：7

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