使用TGA进行PET热解的综合动力学研究
Zaid Alhulaybi1, Ibrahim Dubdub1
1Chemical Engineering Department, King Faisal University, P.O. Box 380, Al-Ahsa 31982, Saudi Arabia.
Polymers
|July 29, 2023
概括
使用热重力度分析分析了聚乙烯二甲 (PET) Pyrolysis 动力学. 反应机制被确定为第一阶,平均激活能量为212kJ/mol,表明一种内热过程.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 聚合物科学 聚合物科学
- 热力学是一种热力学.
背景情况:
- 聚乙烯二甲 (PET) 热解是产生高燃料价值的重要过程.
- 了解反应动力学对于优化PET转化至关重要.
研究的目的:
- 为了研究PET热解的动力学.
- 为了确定激活能量和反应机制.
- 分析热解反应的热力学参数.
主要方法:
- 热重力测量分析 (TGA) 用于四种加热速率 (2,5,10,20 K分钟-1).
- 应用了五种无模型的动力模型 (弗里德曼,弗林-沃尔-卡扎瓦,基辛格-阿卡希拉-苏诺斯,斯塔林克,DAEM).
- 使用Coats-Redfern模型和Criado的主线图来确定反应机制.
主要成果:
- 在650-750 K之间观察到单一的动力反应.
- 平均激活能量 (E) 确定为212 kJ mol-1.1.
- 第一阶反应动力学最好地描述了PET热解机制.
结论:
- 聚乙烯 (PET) 热解通过一阶反应机制进行.
- 反应是内热的,正如热力学分析所表明的那样.
- 动态数据为优化PET转换过程提供了洞察力.
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