| 气相质谱法研究 Fe 与 CO2-- CO 氧化反应动力学 |
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| 引用本文： | 严红燕,胡晓军,张昭亮,侯新梅,周国治.气相质谱法研究 Fe 与 CO2-- CO 氧化反应动力学[J].北京科技大学学报,2015(3):281-285. |
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| 作者姓名： | 严红燕 胡晓军 张昭亮 侯新梅 周国治 |
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| 作者单位： | 1. 北京科技大学钢铁冶金新技术国家重点实验室,北京,100083;2. 北京科技大学冶金与生态工程学院,北京,100083 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 采用气相质谱在线监测反应气体成分变化的方法，研究了1273~1473 K 范围内，不同比例 CO2- CO 混合气体对铁片恒温氧化的反应动力学.结果表明，氧化反应速率与二氧化碳分压呈线性关系，反应速率常数随 CO2/ CO 体积比值增大而减小，铁片氧化反应的表观活化能为(137.7±15.8) kJ·mol -1.该方法得到的结果与文献相比较，结果是可靠的，表明该方法可以用来在线研究气-固反应的动力学.
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| 关 键 词： | 铁 二氧化碳 一氧化碳 氧化反应动力学 气相质谱法 |
Oxidation kinetics of iron and CO2 --CO by using gas mass spectrometry method |
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| YAN Hong-yan,HU Xiao-jun,ZHANG Zhao-liang,HOU Xin-mei,CHOU Kuo-chih.Oxidation kinetics of iron and CO2 --CO by using gas mass spectrometry method[J].Journal of University of Science and Technology Beijing,2015(3):281-285. |
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| Authors: | YAN Hong-yan HU Xiao-jun ZHANG Zhao-liang HOU Xin-mei CHOU Kuo-chih |
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| Institution: | YAN Hong-yan;HU Xiao-jun;ZHANG Zhao-liang;HOU Xin-mei;CHOU Kuo-chih;State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing;School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing; |
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| Abstract: | The oxidation kinetics of iron sheet in CO2 - CO mixture was studied by on-line measuring the composition change of the reaction gas using a gas mass spectrometer under different CO2 partial pressures in the temperature range of 1273 to 1473 K. It is found that the oxidation rate increases linearly with CO2 partial pressure, the rate constant decreases with the increase of CO2 / CO vol-ume ratio, and the apparent activation energy of the oxidation of iron sheet is (137. 7 ± 15. 8) kJ·mol - 1 . Compared with the results re-ported, this on-line mass spectrometry analysis can get reliable results, so it can be used to study the gas- solid reaction kinetics. |
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| Keywords: | iron carbon dioxide carbon monoxide oxidation kinetics gas mass spectrometry method |
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