Self-reaction of C2H5O2 and its cross-reaction with HO2 studied with vacuum ultraviolet photoionization mass spectrometry

Wen, Zuoying; Hao, Yue; Zhang, Yang; Lin, Xiaoxiao; Ma, Ziji; Zhang, Weijun; Wang, Zhandong; Zhang, Cuihong; Fittschen, C.; Tang, Xiaofeng

doi:10.1016/j.cplett.2022.140034

Cited by 4 publications

(2 citation statements)

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“…), the same is true for their reaction with HO 2 (for CH 3 O 2 5,9,[27][28][29][30][31][32] and for C 2 H 5 O 2 13,14,20,26,30,[33][34][35] ). Their reaction with OH radicals has been the subject of a few studies (for CH ).…”

Section: Introductionmentioning

confidence: 95%

“…Methane and ethane are amongst the most abundant hydrocarbons, and their atmospheric oxidation leads to the formation of methyl peroxy (CH 3 O 2 ) and ethyl peroxy (C 2 H 5 O 2 ) radicals. For both radicals, the kinetic and product distribution for the self-reaction has been studied numerous times (for CH 3 O 2 4–12 and for C 2 H 5 O 2 13–26 ), the same is true for their reaction with HO 2 (for CH 3 O 2 5,9,27–32 and for C 2 H 5 O 2 13,14,20,26,30,33–35 ). Their reaction with OH radicals has been the subject of a few studies (for CH 3 O 2 3,36–41 and for C 2 H 5 O 2 42–44 ).…”

Section: Introductionmentioning

confidence: 96%

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Rate constant and branching ratio of the reaction of ethyl peroxy radicals with methyl peroxy radicals

Zhang

et al. 2023

Phys. Chem. Chem. Phys.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 96%

Rate constant and branching ratio of the reaction of ethyl peroxy radicals with methyl peroxy radicals

Zhang

et al. 2023

Phys. Chem. Chem. Phys.

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Insight into the reactions of n-, iso-, sec- and tert-Butylperoxy radicals with hydroperoxyl radical in the Atmosphere: Reaction Mechanism, thermodynamic analysis and kinetics

Yang,

Shu,

Tang

et al. 2024

Computational and Theoretical Chemistry

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Investigation of the Cyclohexene Oxidation Mechanism Through the Direct Measurement of Organic Peroxy Radicals

Li,

Ma,

et al. 2024

Environ. Sci. Technol.

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Monoterpenes, the second most abundant biogenic volatile organic compounds globally, are crucial in forming secondary organic aerosols, making their oxidation mechanisms vital for addressing climate change and air pollution. This study utilized cyclohexene as a surrogate to explore first-generation products from its ozonolysis through laboratory experiments and mechanistic modeling. We employed proton transfer reaction mass spectrometry with NH 4 + ion sources (NH 4 + -CIMS) and a custom-built OH calibration source to quantify organic peroxy radicals (RO 2 ) and closed-shell species. Under near-real atmospheric conditions in a Potential Aerosol Mass-Oxidation Flow Reactor, we identified 30 ozonolysis products, expanding previous data sets of low-oxygen compounds. Combined with simulations based on the Generator for Explicit Chemistry and Kinetics of Organics in the Atmosphere and relevant literature, our results revealed that OH dominates over ozone in cyclohexene oxidation at typical atmospheric oxidant levels with H-abstraction contributing 30% of initial RO 2 radicals. Highly oxidized molecules primarily arise from RO 2 autoxidation initiated by ozone, and at least 15% of ozone oxidation products follow the overlooked nonvinyl hydroperoxides pathway. Gaps remain especially in understanding RO 2 cross-reactions, and the structural complexity of monoterpenes further complicates research. As emissions decrease and afforestation increases, understanding these mechanisms becomes increasingly critical.

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Self-reaction of C2H5O2 and its cross-reaction with HO2 studied with vacuum ultraviolet photoionization mass spectrometry

Cited by 4 publications

References 37 publications

Rate constant and branching ratio of the reaction of ethyl peroxy radicals with methyl peroxy radicals

Rate constant and branching ratio of the reaction of ethyl peroxy radicals with methyl peroxy radicals

Insight into the reactions of n-, iso-, sec- and tert-Butylperoxy radicals with hydroperoxyl radical in the Atmosphere: Reaction Mechanism, thermodynamic analysis and kinetics

Investigation of the Cyclohexene Oxidation Mechanism Through the Direct Measurement of Organic Peroxy Radicals

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