| Autor: |
Jari Peltola, Prasenjit Seal, Niko Vuorio, Petri Heinonen, Arkke Eskola |
| Přispěvatelé: |
Department of Chemistry, Molecular Science, Doctoral Programme in Chemistry and Molecular Sciences |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Popis: |
We have performed direct kinetic measurements of thermal unimolecular reaction of (CH3)2COO in the temperature 243– 340 K and pressure 5–350 Torr ranges using time-resolved UV-absorption spectroscopy. We have utilized a new photolytic precursor, 2-bromo-2-iodopropane ((CH3)2CIBr), which photolysis at 213 nm in presence of O2 produces acetone oxide, (CH3)2COO. The results show that the thermal unimolecular reaction is more important main loss process of (CH3)2COO in the atmosphere than direct kinetic studies hitherto suggest. The current experiments show that the unimolecular reaction rate of (CH3)2COO at 296 K and atmospheric pressure is 899 ± 42 s-1. Probably more importantly, current measurements bring the direct and relative rate measurements of thermal unimolecular reaction kinetics of (CH3)2COO in quantitative agreement. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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