非异热热分解行为和反应动力学的烯丁 styrene (ABS)
Li Xu1, Shengcai Li1, Youchao Zhang1
1College of Architectural Science and Engineering, Yangzhou University, Yangzhou, 225127, China.
Journal of environmental management
|October 12, 2023
概括
这项研究调查了烯二丁乙烯 (ABS) 塑料废物的热解. 热解是一种有前途的能量回收方法,详细的动力和热力学分析为废物管理提供了洞察力.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 塑料消费量的增加需要有效的废物管理策略.
- 热解为从塑料废物中回收能量提供了一个有前途的途径.
- 像ABS这样的耐热塑料带来了独特的处置挑战.
研究的目的:
- 在非异热条件下研究烯二乙 styrene (ABS) 的热解行为.
- 为了确定ABS热解的分解特性,反应机制,动力学和热力学.
- 使用先进的计算方法开发和验证ABS热解的动力模型.
主要方法:
- 采用了合热重力测量,里埃变换红外光谱测量和气体染色学质谱测量 (TG-FTIR-GC/MS).
- 使用无模型的动力学方法 (Vyazovkin,Flynn-Wall-Ozawa,Tang,Starink) 来估计激活能量 (Eα).
- 模型拟合方法和粒子群优化 (PSO) 用于反应机制和动力建模.
主要成果:
- 动力分析得出平均Eα值约为186kJ/mol,反应机制最好用f(α) =(1-α) n. 描述.
- PSO优化提供了精细的动力参数 (E=198.07 kJ/mol,A=7.61×1012 s−1,n=1.56),验证了模型.
- 挥发性产品主要由芳香化合物,,胺,,和组成.
- 热力学分析表明,非自发反应需要额外的能量来进行ABS分解.
结论:
- 该研究提供了对ABS热解动力学和热力学的全面了解.
- 优化的运动模型准确地表示实验数据,有助于过程设计.
- 这些发现为ABS塑料废物的热化学管理和处置提供了宝贵的见解.
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