Transient species in the ozonolysis of tetramethylethene
| Autor: | Yi-Sheng Xu, Qing Cao, Jian-guo Deng, Jianhua Chen, Dong Li, Xiaona Shang, Xiaolu Yang, Kai Zhang |
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| Rok vydání: | 2020 |
| Předmět: |
Aerosols
Environmental Engineering Ozonolysis Ozone 010304 chemical physics Radical Matrix isolation Epoxide General Medicine Alkenes 010402 general chemistry Photochemistry 01 natural sciences 0104 chemical sciences Acetone chemistry.chemical_compound chemistry Criegee intermediate 0103 physical sciences Environmental Chemistry Ozonide Oxidation-Reduction General Environmental Science |
| Zdroj: | Journal of Environmental Sciences. 95:210-216 |
| ISSN: | 1001-0742 |
| DOI: | 10.1016/j.jes.2020.03.027 |
| Popis: | The reaction of alkenes with ozone has great effect on atmospheric oxidation, its transient species can produce OH radicals and contribute to the formation of secondary organic aerosols (SOA). In the present study, the reaction of tetramethylethene (TME) with ozone was investigated using self-assembled low temperature matrix isolation system. The TME and ozone were co-deposited on a salt plate at 15 K, and then slowly warmed up the plate. The first transient species primary ozonide (POZ) was detected, indicating that the reaction followed Criegee mechanism. Then POZ began to decompose at 180 K. However, secondary ozonide (SOZ) was not observed according to Criegee mechanism. Probably, Criegee Intermediate (CI) did not react with inert carbonyl of acetone, but with remaining TME formed tetra-methyl epoxide (EPO). |
| Databáze: | OpenAIRE |
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