Kinetics, products, and mechanism for the reaction of E−CF3CH=CHC2F5 with OH radicals in gas phase and atmospheric implications

Qin Guo, Ni Zhang, Tadafumi Uchimaru, Liang Chen*, Hengdao Quan, Junji Mizukado

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

12 引用 (Scopus)

摘要

E-CF3CH=CHC2F5 is a promising substance that could be used as high temperature bump working fluid. In this study, the rate constants (k1) for the reaction of E−CF3CH=CHC2F5 with OH were measured by the relative rate method: k1 (298 K) = (9.10 ± 0.29) × 10−14 and k1 (253-328 K) = (7.56 ± 0.88) × 10−13 exp [−(632 ± 35)/T] cm3 molecule−1 s−1. The atmospheric lifetime of E−CF3CH=CHC2F5 was estimated to be 127 d, while its radiative efficiency (RE) was evaluated to be 0.198 W m−2 ppb−1. The estimated POCPs of E−CF3CH=CHC2F5 were estimated to be 0.5 and 0.2 for North-west European and USA urban conditions, respectively. The 20, 100, and 500-year time horizon global warming potentials (GWPs) of E−CF3CH=CHC2F5 were estimated to be 73, 20, and 6, respectively. CF3OOOCF3, CF3OOOC2F5, COF2, CO, and CO2 were identified as the carbon-containing products following the degradation of E-CF3CH=CHC2F5.

源语言英语
页(从-至)7-14
页数8
期刊Atmospheric Environment
185
DOI
出版状态已出版 - 7月 2018

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