DOI: 10.1016/j.atmosenv.2017.04.012
Scopus记录号: 2-s2.0-85018494900
论文题名: Atmospheric chemistry of perfluorocyclopentene (cyc-CF2CF2CF2CF=CF−): Kinetics, products and mechanism of gas-phase reactions with OH radicals, and atmospheric implications
作者: Zhang N ; , Uchimaru T ; , Guo Q ; , Qing F ; , Chen L ; , Mizukado J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 160 起始页码: 46
结束页码: 54
语种: 英语
英文关键词: Global warming potential
; Infrared spectrum
; OH radical-initiated oxidation
; Perfluorocyclopentene
; Photochemical ozone creation potential
Scopus关键词: Carbon dioxide
; Chemical reactions
; Environmental impact
; Free radicals
; Gases
; Global warming
; Ozone
; Phase interfaces
; Rate constants
; Global warming potential
; Infrared spectrum
; OH radical
; Perfluorocyclopentene
; Photochemical ozone creation potentials
; Atmospheric chemistry
; cyclopentene derivative
; hydroxyl radical
; perfluorocyclopentene
; unclassified drug
; atmospheric chemistry
; environmental effect
; environmental impact
; etching
; fluorocarbon
; gas phase reaction
; global warming
; hydroxyl radical
; infrared radiation
; oxidation
; ozone
; photochemistry
; radiative transfer
; reaction kinetics
; reaction rate
; spectrum
; absorption spectroscopy
; Article
; climate change
; environmental impact
; greenhouse effect
; least square analysis
; molecular weight
; oxidation
; photochemistry
; photolysis
; priority journal
; radiative forcing
; rate constant
; temperature dependence
; water vapor
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: As a high-profile etching gas, perfluorocyclopentene (cyc-CF2CF2CF2CF=CF−) should be assessed for its atmospheric chemistry and environmental impact prior to expanding its industrial applications. However, the corresponding studies have been limited. In this study, the rate constants for the gas-phase reactions of cyc-CF2CF2CF2CF=CF− with OH radicals were determined by a relative rate method, and shown to be consistent with a theoretical computational results: k1-exp.(298 K) = (4.43 ± 0.10) × 10−14, k1-cal.(298 K) = 4.3 × 10−14, and k1-exp.(253–328 K) = (3.39 ± 0.86) × 10−13 exp(–(616 ± 78)/T) cm3 molecule−1 s−1. The atmospheric lifetime of cyc-CF2CF2CF2CF=CF− is 0.715 year, and its photochemical ozone creation potential is 0.48. Furthermore, the products and mechanism of the OH radical-initiated oxidation reactions were studied for the first time. The major products COF2, CO2, CO, and FC(O)OH are considered to have a negligible environmental effect. The radiative efficiency was determined as 0.246 W m−2 ppb−1, and the global warming potentials (GWPs) with 20-, 100-, and 500- year time horizon were estimated as 188, 51, and 15, respectively. The GWP100 value is significantly lower than those of the replacing targets (6630, 11100, 16 100, 23 500, and 9540 for CF4, C2F6, NF3, SF6, and c-C4F8, respectively). © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82763
Appears in Collections: 气候变化事实与影响
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作者单位: National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, Japan
Recommended Citation:
Zhang N,, Uchimaru T,, Guo Q,et al. Atmospheric chemistry of perfluorocyclopentene (cyc-CF2CF2CF2CF=CF−): Kinetics, products and mechanism of gas-phase reactions with OH radicals, and atmospheric implications[J]. Atmospheric Environment,2017-01-01,160