Product distribution study of the Cl-atom initiated oxidation of ethyl methyl sulfide and diethyl sulfide

G. OKSDATH-MANSILLA, A PEÑÉÑORY, M.ALBU, I.BARNES, P.WIESEN Y M. TERUEL

PERGAMON-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2014 vol. 85 p. 41 - 41

he products formed in the gas-phase reactions of Cl atoms with (CH3CH2)2S and CH3CH2SCH3 have been investigated in a large volume reactor in NOx-free air at atmospheric pressure and (298 ± 2) K using long path ?in situ? FTIR spectroscopy for the analysis. HCl, SO2 and CH3CHO were identified as the major products for both reactions. For the Cl + CH3CH2SCH3 reaction HCHO was also identified as a major product. The yields of the products obtained for the reaction of Cl with (CH3CH2)2S were (59±2) %, (52±5) % and (103±4) % for HCl, SO2 and CH3CHO, respectively. For the reaction of Cl with CH3CH2SCH3 yields of (43±5) %, (55±3) %, (58±3) % and (53±5) % were obtained for HCl, SO2, CH3CHO and HCHO, respectively. This is the first products and mechanistic studies for the gas-phase Cl-initiated oxidation of non-CH3SCH3 alkyl sulfides. Comparison with previous results for the reaction of Cl with dimethyl sulfide is made and simple atmospheric degradation mechanisms are postulated to explain the