气候变化领域集成服务门户(CCPortal): Atmospheric chemistry of CF3C≡CCF3: Kinetics, products, mechanism of gas-phase reaction with OH radicals, and atmospheric implications

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DOI	10.1016/j.atmosenv.2021.118264
	Atmospheric chemistry of CF3C≡CCF3: Kinetics, products, mechanism of gas-phase reaction with OH radicals, and atmospheric implications
	Zhang Q.; Qin S.; Guo Z.; Ni H.; Zhang J.
发表日期	2021
ISSN	1352-2310
卷号	251
英文摘要	The CF3C≡CCF3 reaction offers a potential alternative to greenhouse gas-producing reactions in a wide range of industrial applications; however, a better understanding of its impacts on the atmospheric environment is needed before it can be safely and effectively applied on a large scale. In this study, the rate constant (k1) for the reaction of CF3C≡CCF3 with OH was measured to be (7.28 ± 0.07) × 10−14 by the relative rate method, and the Arrhenius expression was k1 (253–328 K) = (1.53 ± 0.44) × 10−12 exp[–(906 ± 97)/T] cm3 molecule−1 s−1. The atmospheric lifetime of CF3C≡CCF3 was estimated to be 159 d, while its radiative efficiency was determined to be 0.250 Wm−2 ppb−1. The 20-, 100-, and 500-year global warming potentials of CF3C≡CCF3 were estimated to be 152, 41, and 12, respectively. What's more, the photochemical ozone creation potentials of CF3C≡CCF3 were estimated to be 0.50 and 0.13 for northwestern European conditions and US urban conditions, respectively. Hence, its contribution to the formation of tropospheric ozone is negligible. What's more, CF3OOOCF3, COF2, and CO2 were identified as carbon-containing products following the degradation of CF3C≡CCF3. Our results confirm that there is no secondary environmental pollution following the degradation of CF3C≡CCF3. Hence, the findings show that CF3C[tbnd]CCF3 is a substitute with relatively low environmental impact. © 2021
关键词	Atmospheric lifetime CF3C≡CCF3 Degradation mechanism Global warming potential (GWP)Photochemical ozone creation potential (POCP)
语种	英语
scopus关键词	Environmental impact; Free radicals; Global warming; Greenhouse gases; Ozone; Phase interfaces; Rate constants; Arrhenius expressions; Atmospheric environment; Atmospheric implications; Carbon-containing products; Environmental pollutions; Global warming potential; Photochemical ozone creation potentials; Radiative efficiency; Atmospheric chemistry; carbon; carbon dioxide; hydroxyl radical; ozone; atmospheric chemistry; carbon dioxide; concentration (composition); environmental impact; gas phase reaction; global warming; greenhouse gas; hydroxyl radical; ozone; photochemistry; reaction kinetics; troposphere; Article; atmosphere; chemical reaction kinetics; degradation; environmental impact; Europe; greenhouse effect; oxidation; priority journal; rate constant; reaction analysis; temperature dependence; troposphere; United States; urban area; Europe; United States
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248536
作者单位	State Key Lab for Fluorine Greenhouse Gases Replacement and Control Treatment, Zhejiang Research Institute of Chemical Industry, Hangzhou, 310023, China
推荐引用方式 GB/T 7714	Zhang Q.,Qin S.,Guo Z.,et al. Atmospheric chemistry of CF3C≡CCF3: Kinetics, products, mechanism of gas-phase reaction with OH radicals, and atmospheric implications[J],2021,251.
APA	Zhang Q.,Qin S.,Guo Z.,Ni H.,&Zhang J..(2021).Atmospheric chemistry of CF3C≡CCF3: Kinetics, products, mechanism of gas-phase reaction with OH radicals, and atmospheric implications.ATMOSPHERIC ENVIRONMENT,251.
MLA	Zhang Q.,et al."Atmospheric chemistry of CF3C≡CCF3: Kinetics, products, mechanism of gas-phase reaction with OH radicals, and atmospheric implications".ATMOSPHERIC ENVIRONMENT 251(2021).