HFO-1234ze(E)氧化分解机理的ReaxFF模拟研究

被引:1
|
作者
辛立勇 [1 ]
刘朝 [1 ]
李期斌 [1 ]
霍二光 [2 ]
机构
[1] 重庆大学能源与动力工程学院低品位能源利用技术及系统教育部重点实验室
[2] 苏州科技大学物理科学与技术学院
关键词
HFO-1234ze(E); ORC; 氧化分解; ReaxFF;
D O I
暂无
中图分类号
TB64 [制冷材料];
学科分类号
0805 ;
摘要
采用密度泛函理论和ReaxFF力场对HFO-1234ze(E)的氧化分解机理进行了研究。分析了起始反应、氧化分解反应的主要产物、温度对氧化分解的影响和HFO-1234ze(E)数量对氧化分解的影响等。起始反应主要是HFO-1234ze(E)发生均裂反应,起始反应阶段生成的自由基主要是F自由基、H自由基和CF3自由基,O2主要是跟起始反应生成的自由基进行反应。HFO-1234ze(E)氧化分解的主要产物是HF、CO、CO2、COF和COF2等,这与文献中实验结果一致。增加温度会促进CF3自由基和CO分子的生成,但会抑制COF自由基的生成。增加HFO-1234ze(E)的初始值对消耗的HFO-1234ze(E)占初始值的比例无明显影响,但HF生成量与HFO-1234ze(E)的初始值成正比。从分子尺度进行研究,有助于了解HFO类工质氧化反应机理。
引用
收藏
页码:2780 / 2786
页数:7
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