Biochar as a precursor of activated carbon

被引：137

作者：

Azargohar, R.

Dalai, A. K. ^{[1
]}

机构：

[1] Univ Saskatchewan, Dept Chem Engn, Catalysis Lab, Saskatoon, SK S7N 5C5, Canada

来源：

APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY | 2006年 / 131卷 / 1-3期

关键词：

biochar; activated carbon; chemical activation; potassium hydroxide;

D O I：

10.1385/ABAB:131:1:762

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Biochar was evaluated as a precursor of activated carbon. This product was produced by chemical activation using potassium hydroxide. The effects of operating conditions of activation process, such as temperature, activating agent to biochar mass ratio, and nitrogen flow rate, on the textural and chemical properties of the product were investigated. Activated carbon produced by this method has internal surface area at least 50 times than that of the precursor and is highly microporous, which is also confirmed by scanning electron microscopy analysis. Fourier-transform infrared spectroscopy analysis showed development of aromatization in the structure of activated carbon. X-ray diffraction data indicated the formation of small, two-dimensional graphite-like structure at high temperatures. Thermogravimetric study showed that when potassium hydroxide to biochar mass ratio was more than one, the weight loss decreased.

引用

页码：762 / 773

页数：12

共 14 条

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[Anonymous], POROSITY CARBONS CHA

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