Reaction rate constants with OH radicals at 253–328 K and atmospheric implications for (CF3)2CHOCxH(2x + 1) (x = 1, 2, 3)

Wei Li; Sheng Qin; Qiyan Zhang; Zhikai Guo; Xiaoling Zhang

doi:10.1016/j.cplett.2018.10.027

Reaction rate constants with OH radicals at 253–328 K and atmospheric implications for (CF₃)₂CHOC_xH_(2x + 1) (x = 1, 2, 3)

Wei Li, Sheng Qin, Qiyan Zhang, Zhikai Guo, Xiaoling Zhang^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Rate constants at 253–328 K for reactions of OH radicals with (CF₃)₂CHOCH₃ (k6), (CF₃)₂CHOCH₂CH₃ (k7), and (CF₃)₂CHOCH₂CH₂CH₃ (k8) were studied using a relative rate method. Data on k₆, k₇, and k₈ (2.13 × 10⁻¹³, 1.07 × 10⁻¹², and 1.92 × 10⁻¹² cm³ molecule⁻¹ s⁻¹, respectively) were obtained at 298 K. The corresponding radiative efficiencies (0.103, 0.034, and 0.021 W m⁻² ppb⁻¹) were calculated from infrared absorption spectra measured at room temperature. Global warming potential (GWP₁₀₀) was estimated to be 5, <1, and <1, respectively, and the photochemical ozone creation potential in all cases was <10.

Original language	English
Pages (from-to)	125-130
Number of pages	6
Journal	Chemical Physics Letters
Volume	714
DOIs	https://doi.org/10.1016/j.cplett.2018.10.027
Publication status	Published - 16 Jan 2019

Keywords

Atmospheric lifetime
Global warming potential
Hydrofluoroethers
OH radicals
Photochemical ozone creation potential

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10.1016/j.cplett.2018.10.027

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Li, W., Qin, S., Zhang, Q., Guo, Z., & Zhang, X. (2019). Reaction rate constants with OH radicals at 253–328 K and atmospheric implications for (CF₃)₂CHOC_xH_(2x + 1) (x = 1, 2, 3). Chemical Physics Letters, 714, 125-130. https://doi.org/10.1016/j.cplett.2018.10.027

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title = "Reaction rate constants with OH radicals at 253–328 K and atmospheric implications for (CF3)2CHOCxH(2x + 1) (x = 1, 2, 3)",

abstract = "Rate constants at 253–328 K for reactions of OH radicals with (CF3)2CHOCH3 (k6), (CF3)2CHOCH2CH3 (k7), and (CF3)2CHOCH2CH2CH3 (k8) were studied using a relative rate method. Data on k6, k7, and k8 (2.13 × 10−13, 1.07 × 10−12, and 1.92 × 10−12 cm3 molecule−1 s−1, respectively) were obtained at 298 K. The corresponding radiative efficiencies (0.103, 0.034, and 0.021 W m−2 ppb−1) were calculated from infrared absorption spectra measured at room temperature. Global warming potential (GWP100) was estimated to be 5, <1, and <1, respectively, and the photochemical ozone creation potential in all cases was <10.",

keywords = "Atmospheric lifetime, Global warming potential, Hydrofluoroethers, OH radicals, Photochemical ozone creation potential",

author = "Wei Li and Sheng Qin and Qiyan Zhang and Zhikai Guo and Xiaoling Zhang",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2019",

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day = "16",

doi = "10.1016/j.cplett.2018.10.027",

language = "English",

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T1 - Reaction rate constants with OH radicals at 253–328 K and atmospheric implications for (CF3)2CHOCxH(2x + 1) (x = 1, 2, 3)

AU - Li, Wei

AU - Qin, Sheng

AU - Zhang, Qiyan

AU - Guo, Zhikai

AU - Zhang, Xiaoling

PY - 2019/1/16

Y1 - 2019/1/16

N2 - Rate constants at 253–328 K for reactions of OH radicals with (CF3)2CHOCH3 (k6), (CF3)2CHOCH2CH3 (k7), and (CF3)2CHOCH2CH2CH3 (k8) were studied using a relative rate method. Data on k6, k7, and k8 (2.13 × 10−13, 1.07 × 10−12, and 1.92 × 10−12 cm3 molecule−1 s−1, respectively) were obtained at 298 K. The corresponding radiative efficiencies (0.103, 0.034, and 0.021 W m−2 ppb−1) were calculated from infrared absorption spectra measured at room temperature. Global warming potential (GWP100) was estimated to be 5, <1, and <1, respectively, and the photochemical ozone creation potential in all cases was <10.

AB - Rate constants at 253–328 K for reactions of OH radicals with (CF3)2CHOCH3 (k6), (CF3)2CHOCH2CH3 (k7), and (CF3)2CHOCH2CH2CH3 (k8) were studied using a relative rate method. Data on k6, k7, and k8 (2.13 × 10−13, 1.07 × 10−12, and 1.92 × 10−12 cm3 molecule−1 s−1, respectively) were obtained at 298 K. The corresponding radiative efficiencies (0.103, 0.034, and 0.021 W m−2 ppb−1) were calculated from infrared absorption spectra measured at room temperature. Global warming potential (GWP100) was estimated to be 5, <1, and <1, respectively, and the photochemical ozone creation potential in all cases was <10.

KW - Atmospheric lifetime

KW - Global warming potential

KW - Hydrofluoroethers

KW - OH radicals

KW - Photochemical ozone creation potential

UR - http://www.scopus.com/inward/record.url?scp=85056187904&partnerID=8YFLogxK

U2 - 10.1016/j.cplett.2018.10.027

DO - 10.1016/j.cplett.2018.10.027

M3 - Article

AN - SCOPUS:85056187904

SN - 0009-2614

VL - 714

SP - 125

EP - 130

JO - Chemical Physics Letters

JF - Chemical Physics Letters

ER -

Reaction rate constants with OH radicals at 253–328 K and atmospheric implications for (CF₃)₂CHOC_xH_(2x + 1) (x = 1, 2, 3)

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Reaction rate constants with OH radicals at 253–328 K and atmospheric implications for (CF3)2CHOCxH(2x + 1) (x = 1, 2, 3)

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Reaction rate constants with OH radicals at 253–328 K and atmospheric implications for (CF₃)₂CHOC_xH_(2x + 1) (x = 1, 2, 3)