Gas-phase degradation of 2-butanethiol initiated by OH radicals and Cl atoms: kinetics, product yields and mechanism at 298 K and atmospheric pressure.

ABSTRACT: Relative rate coefficients and product distribution of the reaction of 2-butanethiol (2butSH) with OH radicals and Cl atoms were obtained at atmospheric pressure and 298 K. The experiments were performed in a 480 L borosilicate glass photoreactor in synthetic air coupled to a long path "in situ" FTIR spectrometer. The rate coefficients obtained by averaging the values from different experiments were: k _OH = (2.58 ± 0.21) × 10^-11 cm³ per molecule per s and k _Cl = (2.49 ± 0.19) × 10^-10 cm³ per molecule per s. The kinetic values were compared with related alkyl thiols and homologous alkyl alcohols, where it was found that thiols react faster with both oxidants, OH radicals and Cl atoms. SO₂ and 2

SUBMITTER: Cardona AL 

PROVIDER: S-EPMC9067059 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature