| 面向固体热解单一活化能计算的等转化率动力学分析方法研究 |
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| 引用本文： | 韩运晴,刘乃安.面向固体热解单一活化能计算的等转化率动力学分析方法研究[J].火灾科学,2011,20(1):9-15. |
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| 作者姓名： | 韩运晴 刘乃安 |
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| 作者单位： | 中国科学技术大学火灾科学国家重点实验室,安徽合肥,230026 |
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| 基金项目： | National Natural Science Foundation of China，R&D Special Fund for Public Welfare Industry，the Fok Ying Tung Education Foundation，National Natural Science Foundation of China |
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| 摘 要： | 基于改进的Vyazovkin方法,提出了一种新的求解固态反应活化能的等转化率方法。这种方法不仅避开了对反应机理的选择,而且突破了当前等转化率方法不能像拟合法一样求解出明确的活化能的局限。通过对模拟数据及挤塑聚苯乙烯热解实验数据的验证,证实了这种方法对实验噪音具有良好的容许度,并且能够对热重数据的一阶导数据有明显的多峰多歩反应求解出比拟合法更可信的活化能的值。
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| 关 键 词： | 等转化率方法 拟合法 活化能 |
| 收稿时间： | 2010/9/26 0:00:00 |
| 修稿时间： | 2010/10/21 0:00:00 |
New isoconversional method for evaluating unambiguous activation energy values for solid decomposition |
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| HAN Yun-qing and LIU Nai-an.New isoconversional method for evaluating unambiguous activation energy values for solid decomposition[J].Fire Safety Science,2011,20(1):9-15. |
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| Authors: | HAN Yun-qing and LIU Nai-an |
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| Institution: | HAN Yun-qing,LIU Nai-an(State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei,230026,China) |
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| Abstract: | A new isoconversional method based on the modified Vyazovkin method is proposed to evaluate the activation energy for solid-state reactions.This method is used without any pre-knowledge of reaction mechanisms and overcomes the limitation of current isoconversional methods that they fail to give unambiguous activation energy values like model-fitting methods.This method was tested in both of simulated data and experimental data of extruded polystyrene decomposition,which showed that this method had good tole... |
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| Keywords: | Isoconversional method Model-fitting method Activation energy |
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