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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received April 4, 2000
Accepted November 22, 2000

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Influence of Pretreatment and Activation Conditions in the Preparation of Activated Carbons from Anthracite

Si Hyun Lee^† Chang Da Lee¹

Energy and Environment Research Department, Korea Institute of Energy Research, P.O. Box 103, Yusong, Taejon, Korea ¹Beijing Institute of Coal Chemistry, CCRI, China

lsh3452@kier.re.kr

Korean Journal of Chemical Engineering, January 2001, 18(1), 26-32(7), 10.1007/BF02707194

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Abstract

The influence of pretreatment and activation conditions on anthracite activation was investigated. Separation of low ash coals by using dense media was conducted to obtain appropriate raw materials for activation. Activated carbons were produced from crushed and granule coals by physical activation (steam or CO2) and physical activation with chemical pretreatment in mild and strong conditions. Microporous activated carbons having a surface area of 900 m(2)/g were produced by steam activation from granules with 60% burn-off for 3 hrs of activation. Chemical pretreatment at the strong condition increased the surface area by 30% as compared with non-treated activated carbons. Chemical pretreatment, in general, affected activation degree, so pore volume increased by 20% and bum-off increased remarkably at the identical activation conditions. CO2 activation was proven to be an effective method for producing microporous activated carbons having an average pore diameter of 20 Angstrom.

Keywords

Anthracite Anthracite Activation Chemical Pretreatment Alkali Pretreatment

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