| 固体孔隙结构随反应进程变化的气-固反应模型 |
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| 引用本文： | 孙桂芝,郑红霞,孙长余,汪琦. 固体孔隙结构随反应进程变化的气-固反应模型[J]. 辽宁科技大学学报, 2012, 35(2): 118-122 |
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| 作者姓名： | 孙桂芝 郑红霞 孙长余 汪琦 |
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| 作者单位： | 朝阳师范高等专科学院,辽宁朝阳,122000;辽宁科技大学化学冶金辽宁省重点实验室,辽宁鞍山,114051 |
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| 摘 要： | 提出了一个描述固体孔隙结构参数随反应进程变化的气-固反应模型,推导出了一级不可逆气-固反应的解析解.在模型中,用实验可测的“扩散因子”建立起有效扩散系数与固体反应进程的关系,表示固体孔隙的变化对反应速率的影响.
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| 关 键 词： | 气-固反应 动力学模型 固体孔隙结构 反应进程 |
Gas-solid reaction model describing dependence of solid porosity structure on reaction extent of solid |
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| SUN Gui-zhi , ZHENG Hong-xia , SUN Chang-yu , WANG Qi. Gas-solid reaction model describing dependence of solid porosity structure on reaction extent of solid[J]. Journal of University of Science and Technology Liaoning, 2012, 35(2): 118-122 |
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| Authors: | SUN Gui-zhi ZHENG Hong-xia SUN Chang-yu WANG Qi |
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| Affiliation: | 1.Chaoyang Teachers College,Chaoyang 122000,China; 2.Key Laboratory of Chemistry and Metallurgy Liaoning,University of Science and Technology Liaoning,Anshan 114051,China) |
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| Abstract: | A gas-solid reaction model describing dependence of the solid porosity structure parameters depending on extent of conversion is developed,and the analytic solution of one-order irreversible gas-solid reaction of the model is deduced.In the model,an equation expressing the efficient diffusion coefficient and the reaction extent of solid is given by an effective diffusion factor passably measured by experiment and it is used to evaluate the effect of the changes of the solid porosity structures on the reaction rate. |
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| Keywords: | gas-solid reaction kinetics model solid porosity structure reaction extent of solid |
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