TY - JOUR
T1 - Kinetics, products, and mechanism for the reaction of E−CF3CH=CHC2F5 with OH radicals in gas phase and atmospheric implications
AU - Guo, Qin
AU - Zhang, Ni
AU - Uchimaru, Tadafumi
AU - Chen, Liang
AU - Quan, Hengdao
AU - Mizukado, Junji
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/7
Y1 - 2018/7
N2 - 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.
AB - 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.
KW - Degradation mechanism
KW - E−CFCH=CHCF
KW - Global warming potential (GWP)
KW - Photochemical ozone creation potential (POCP)
KW - Tropospheric lifetime
UR - http://www.scopus.com/inward/record.url?scp=85046447307&partnerID=8YFLogxK
U2 - 10.1016/j.atmosenv.2018.04.047
DO - 10.1016/j.atmosenv.2018.04.047
M3 - Article
AN - SCOPUS:85046447307
SN - 1352-2310
VL - 185
SP - 7
EP - 14
JO - Atmospheric Environment
JF - Atmospheric Environment
ER -