In-cloud processes of methacrolein under simulated conditions – Part 1: Aqueous phase photooxidation
Item
Title (Dublin Core)
In-cloud processes of methacrolein under simulated conditions – Part 1: Aqueous phase photooxidation
Description (Dublin Core)
The photooxidation of methacrolein was studied in the aqueous phase under simulated cloud droplet conditions. The obtained rate constant of OH-oxidation of methacrolein at 6°C in unbuffered solutions was 5.8(±0.9)×10<sup>9</sup> M<sup>−1</sup> s<sup>−1</sup>. The measured rate coefficient is consistent with OH-addition on the C=C bond. This was confirmed by the mechanism established on the study of the reaction products (at 25°C in unbuffered solutions) where methylglyoxal, formaldehyde, hydroxyacetone and acetic acid/acetate were the main reaction products. An upper limit for the total carbon yield was estimated to range from 53 to 85%, indicating that some reaction products remain unidentified. A possible source of this mismatch is the formation of higher molecular weight compounds as primary reaction products which are presented in El Haddad et al. (2009) and Michaud et al. (2009).
Creator (Dublin Core)
Yao Liu
Haddad, I.
Scarfogliero, M.
Nieto-Gligorovski, L.
Temime-Roussel, B.
Quivet, E.
Marchand, N.
Picquet-Varrault, B.
Monod, A.
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-9-5093-2009
https://acp.copernicus.org/articles/9/5093/2009/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
