Reduction of iron oxide in carbon monoxide atmosphere - reaction controlled kinetics
Reduction of iron oxide in carbon monoxide atmosphere - reaction controlled kinetics
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DOI：
10.1016/j.fuproc.2003.12.009
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发表时间：
2004-11-15
影响因子：
7.5
通讯作者：
Lalvani, SB
中科院分区：
文献类型：
--
作者：
Mondal, K;Lorethova, H;Lalvani, SB
在800 ~ 900 ℃的温度范围内，对Fe（2）O（3）在100%CO连续气流中的还原进行了热重分析（TGA）。固体的X射线衍射分析确定了反应产物铁、石墨和铁的碳化物的存在。一个动力学模型的基础上的一级不可逆速率动力学的开发和拟合的TGA数据，以估计每个还原反应的速率常数。在此分析中考虑的反应途径涉及铁氧化物的还原，Boudouard反应和碳化铁的形成。计算速率参数并与文献报道的数据进行比较。(C)2004 Elsevier B. V.保留所有权利。
Thermogravimetric analysis (TGA) of the reduction of Fe(2)O(3) in a continuous stream of 100% CO was conducted at temperatures ranging from 800 to 900 degreesC. X-ray diffraction analysis of solids identified the presence of iron, graphite and a carbide of iron as the products of reactions. A kinetic model based on the first-order irreversible rate kinetics was developed and fitted to the TGA data so as to estimate the rate constants for each reduction reaction. The reaction pathways considered in this analysis involved reduction of iron oxides, Boudouard reaction and iron-carbide formation. The rate parameters were calculated and compared with data reported in literature. (C) 2004 Elsevier B.V. All rights reserved.