Kinetics of the Reaction Between the Criegee Intermediate CH₂OO and NO₂: Experimental Measurements and Comparison with Theory.

ABSTRACT: Kinetics of the gas phase reaction between the stabilized Criegee intermediate formaldehyde oxide (CH₂OO) and nitrogen dioxide (NO₂) have been measured using laser flash photolysis of CH₂I₂/O₂/N₂/NO₂ mixtures coupled with time-resolved broadband ultraviolet absorption spectroscopy. Experiments were performed in N₂ under pseudo-first-order conditions at temperatures between 242 and 353 K and pressures in the range 25 to 300 Torr. The kinetics of CH₂OO + NO₂ are independent of pressure, with a mean rate coefficient of k₁ = (1.24 ± 0.22) × 10^-12 cm³ s^-1 at 298 K, where the uncertainty represents a combination of the 1σ statistical err

SUBMITTER: Lade RE 

PROVIDER: S-EPMC11874013 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature