| 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(英文)[J].火灾科学,2011,20(1):9-15. |
| 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(英文) |
| New isoconversional method for evaluating unambiguous activation energy values for solid decomposition |
| 投稿时间：2010-09-26 修订日期：2010-10-21 |
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| DOI：10.3969/j.issn.1004-5309.年.期.顺序 |
| 基金项目: |
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| 中文关键词: 等转化率方法 拟合法 活化能 |
| 英文关键词:Isoconversional method Model-fitting method Activation energy |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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 tolerance of experimental noise and was proved to be more effective than model-fitting methods to extract reliable activation energy values those multiple reactions whose first-order derivative of thermogravimetric data turn out distinct maximums. |
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