DSC热降解石楠的动力学：混合动力学方法
Kinetics of the thermal degradation of Erica arborea by DSC: Hybrid kinetic method
摘要：
这项工作的范围是确定的动力学参数的热氧化降解的地中海擦洗使用的混合方法在实验室开发。DSC和TGA在本研究中在空气吹扫下用于记录氧化反应。在DSC中记录了两个主要和重叠的放热峰，并使用实验和数值分离进行了个性化。该第一阶段允许获得每个放热现象的焓变化。在第二次，无模型方法应用于每个孤立的曲线，以确定表观活化能。对于由两个独立连续反应组成的整体模型，提出了一个反应动力学方案。在精细的平均值的焓变和表观活化能先前确定的注入模型拟合方法，以获得每个氧化反应的反应级数和指前因子。我们计划在子模型中使用这些数据，将其集成到荒地火灾蔓延模型中。
英文摘要：
The scope of this work was the determination of kinetic parameters of the thermal oxidative degradation of a Mediterranean scrub using a hybrid method developed at the laboratory. DSC and TGA were used in this study under air sweeping to record oxidative reactions. Two dominating and overlapped exothermic peaks were recorded in DSC and individualized using an experimental and numerical separation. This first stage allowed obtaining the enthalpy variation of each exothermic phenomenon. In a second time, a model free method was applied on each isolated curve to determine the apparent activation energies. A reactional kinetic scheme was proposed for the global exotherm composed of two independent and consecutive reactions. In fine mean values of enthalpy variation and apparent activation energy previously determined were injected in a model fitting method to obtain the reaction order and the preexponential factor of each oxidative reaction. We plan to use these data in a sub-model to be integrated in a wildland fire spread model.
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