Articles | Volume 23, issue 10
https://doi.org/10.5194/acp-23-5715-2023
https://doi.org/10.5194/acp-23-5715-2023
Research article
 | 
23 May 2023
Research article |  | 23 May 2023

On the formation of highly oxidized pollutants by autoxidation of terpenes under low-temperature-combustion conditions: the case of limonene and α-pinene

Roland Benoit, Nesrine Belhadj, Zahraa Dbouk, Maxence Lailliau, and Philippe Dagaut

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Autoxidation of terpenes, a common pathway in tropospheric and low temperature combustion conditions: the case of limonene and α-pinene
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Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2021-964,https://doi.org/10.5194/acp-2021-964, 2021
Revised manuscript not accepted
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On the similarities and differences between the products of oxidation of hydrocarbons under simulated atmospheric conditions and cool flames
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Subject: Gases | Research Activity: Laboratory Studies | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
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Cited articles

Bailey, H. C. and Norrish, R. G. W.: The oxidation of hexane in the cool-flame region, P. Roy. Soc. Lond. A, 212, 311–330, https://doi.org/10.1098/rspa.1952.0084, 1952. 
Bateman, A. P., Nizkorodov, S. A., Laskin, J., and Laskin, A.: Time-resolved molecular characterization of limonene/ozone aerosol using high-resolution electrospray ionization mass spectrometry, Phys. Chem. Chem. Phys., 11, 7931–7942, https://doi.org/10.1039/B905288G, 2009. 
Belhadj, N., Benoit, R., Dagaut, P., Lailliau, M., Serinyel, Z., Dayma, G., Khaled, F., Moreau, B., and Foucher, F.: Oxidation of di-n-butyl ether: Experimental characterization of low-temperature products in JSR and RCM, Combust. Flame, 222, 133–144, https://doi.org/10.1016/j.combustflame.2020.08.037, 2020. 
Belhadj, N., Benoit, R., Dagaut, P., and Lailliau, M.: Experimental characterization of n-heptane low-temperature oxidation products including keto-hydroperoxides and highly oxygenated organic molecules (HOMs), Combust. Flame, 224, 83–93, https://doi.org/10.1016/j.combustflame.2020.10.021, 2021a. 
Belhadj, N., Lailliau, M., Benoit, R., and Dagaut, P.: Towards a Comprehensive Characterization of the Low-Temperature Autoxidation of Di-n-Butyl Ether, Molecules, 26, 7174, https://doi.org/10.3390/molecules26237174, 2021b. 
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Short summary
We observed a surprisingly similar set of oxidation product chemical formulas from limonene and α-pinene, including oligomers, formed under cool-flame (present experiments) and simulated atmospheric oxidation (literature). Data analysis indicated that a subset of chemical formulas is common to all experiments independently of experimental conditions. Also, this study indicates that many detected chemical formulas can be ascribed to an autooxidation reaction.
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