Insight into the decomposition mechanism of C6F12O-CO2 gas mixture
Insight into the decomposition mechanism of C6F12O-CO2 gas mixture
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DOI：
10.1016/j.cej.2018.10.167
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发表时间：
2019-03-15
影响因子：
15.1
通讯作者：
Chen, Dachang
中科院分区：
文献类型：
--
作者：
Li, Yi;Zhang, Xiaoxing;Chen, Dachang
C6 F12 O（1，1，1，2，2，4，5，5，5-壬二氟-4-（三氟甲基）-3-戊酮）是一种环境友好型气体绝缘介质，具有替代强温室气体SF6的潜力，适用于中低压气体绝缘设备。本文基于ReaxFF分子动力学方法，探讨了不同温度和压力条件下C6 F12 O-CO2混合气体的分解机理。并对C_6F_（12）O-CO_2混合气体的热分解特性进行了测试。结果表明，C_6F_（12）O-CO_2混合气体的主要分解粒子为CF_3、CF_2、CF、C_3F_7、CO、COF_2、C_5F_9O和F，其中CF_3、CF_2、CF、C_3F_7、CO和F的含量较高。C6 F12 O-CO2气体混合物热分解主要生成CF 4、C2 F6、C3 F8、C3 F6和C5 F12，其中C2 F6和C3 F6含量最高，C3 F8次之，CF 4含量最低。相关研究结果不仅全面揭示了C6 F12 O-CO2混合气体的分解机理，而且为探索C6 F12 O-CO2混合气体的分解特性和工程应用提供了重要参考。
C6F12O (1,1,1,2,2,4,5,5,5-Nonafluoro-4-(trifluoromethyl)-3-pentanone) is an environmental friendly gas insulating medium with the potential to replace the strong greenhouse gas SF6 for medium and low pressure gas insulated equipment. In this paper, the decomposition mechanism of C6F12O-CO2 gas mixture under different temperature and pressure conditions were explored based on the ReaxFF molecular dynamics. The thermal decomposition characteristics of C6F12O-CO2 gas mixture were also tested. We found that the main decomposition particles of C6F12O-CO2 gas mixture incudes CF3, CF2, CF, C3F7, CO, COF2, C5F9O and F, and the content of CF3, CF2, CF, C3F7, CO and F is high. The thermal decomposition of C6F12O-CO2 gas mixture mainly produces CF4, C2F6, C3F8, C3F6 and C5F12, among which the content of C2F6 and C3F6 are the highest, followed by C3F8 and the content of CF4 is the lowest. Relevant results not only reveal the decomposition mechanism of C6F12O-CO2 gas mixture comprehensively, but also provide an important reference for exploring the decomposition characteristics and engineering applications of C6F12O-CO2 gas mixture.