Preparation of activated carbons from bituminous coals with CO2 activation - Influence of coal oxidation

H. Teng, J. A. Ho, Y. F. Hsu

研究成果: Article同行評審

65 引文 斯高帕斯(Scopus)

摘要

In this study activated carbons were prepared from three Australian bituminous coals. The influence of coal oxidation on the carbonization and activation processes and the structure of the resulting activated carbons were explored. The oxidation was conducted at 200°C in O2 for 6 hours. During the oxidation the amount of oxygen uptake decreased with the O/C atomic ratio of the raw coal. The carbonization of the oxidized coal exhibited a broader volatile evolution with respect to temperature, and the resulting char from the oxidized coal had a larger surface area. The oxidation of the coal precursors resulted in increases in the specific surface area and pore volume of the resulting activated carbons. For the carbons from the oxidized coals, the activation rate in CO2 was higher and the structure more accessible for CO2 penetration.

原文English
頁(從 - 到)275-283
頁數9
期刊Carbon
35
發行號2
DOIs
出版狀態Published - 1997

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 材料科學(全部)

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