Hydrotrioxide (ROOOH) formation in the atmosphere
Research output: Contribution to journal › Journal article › Research › peer-review
Organic hydrotrioxides (ROOOH) are known to be strong oxidants used in organic synthesis. Previously, it has been speculated that they are formed in the atmosphere through the gas-phase reaction of organic peroxy radicals (RO2) with hydroxyl radicals (OH). Here, we report direct observation of ROOOH formation from several atmospherically relevant RO2 radicals. Kinetic analysis confirmed rapid RO2 + OH reactions forming ROOOH, with rate coefficients close to the collision limit. For the OH-initiated degradation of isoprene, global modeling predicts molar hydrotrioxide formation yields of up to 1%, which represents an annual ROOOH formation of about 10 million metric tons. The atmospheric lifetime of ROOOH is estimated to be minutes to hours. Hydrotrioxides represent a previously omitted substance class in the atmosphere, the impact of which needs to be examined.
Original language | English |
---|---|
Journal | Science |
Volume | 376 |
Issue number | 6596 |
Pages (from-to) | 979-982 |
Number of pages | 4 |
ISSN | 0036-8075 |
DOIs | |
Publication status | Published - 27 May 2022 |
- KINETIC-DATA EVALUATION, C-H BONDS, IUPAC SUBCOMMITTEE, RATE CONSTANTS, OH, CHEMISTRY, RADICALS, MODEL, MECHANISM, OXIDATION
Research areas
ID: 312484409