Producción CyT
Artículo
Autoría
Cardona Alejandro L.
;
Gibilisco, Rodrigo G.
;
Rivela, Cynthia B.
;
Blanco, María B.
;
Patroescu-Klotz, Iulia
;
Illmann, Niklas
;
Wiesen, Peter
;
Teruel, M. A.
Fecha
2021
Editorial y Lugar de Edición
PERGAMON-ELSEVIER SCIENCE LTD
Revista
CHEMOSPHERE
PERGAMON-ELSEVIER SCIENCE LTD
Resumen
Información suministrada por el agente en
SIGEVA
Relative rate coefficients of the OH radical -initiated oxidation of allyl methyl sulfide (AMS, H2Cdouble bondCHCH2SCH3) and allyl ethyl sulfide (AES, H2Cdouble bondCHCH2SCH2CH3) have been measured at atmospheric pressure of synthetic air and 298 K: kAMS= (4.98 ± 1.42) and kAES= (6.88 ± 1.49) × 10−11 cm3 molecule−1 s−1 by means of ?in situ? FTIR spectroscopy. In addition, the molar yields of the main reaction ...
Relative rate coefficients of the OH radical -initiated oxidation of allyl methyl sulfide (AMS, H2Cdouble bondCHCH2SCH3) and allyl ethyl sulfide (AES, H2Cdouble bondCHCH2SCH2CH3) have been measured at atmospheric pressure of synthetic air and 298 K: kAMS= (4.98 ± 1.42) and kAES= (6.88 ± 1.49) × 10−11 cm3 molecule−1 s−1 by means of ?in situ? FTIR spectroscopy. In addition, the molar yields of the main reaction products of AMS with OH radicals formed in the absence and presence of nitric oxides (NOX) were determined to be the following: sulfur dioxide (95 ± 12) % and (51 ± 12) % and for acrolein (50 ± 9) % and (41 ± 9) %. In the reaction of AES with OH radicals, the following molar yields were obtained: for sulfur dioxide (88 ± 13) % and (56 ± 12) % and acrolein (36 ± 9) % and (41 ± 9) %. The present results suggest that the abstraction at C3 plays an important role in the oxidation mechanism as the addition to the double bond. This work represents the first study of the OH radical interaction with AMS and AES carried out under atmospheric conditions. The atmospheric implications were discussed in terms of the atmospheric residence times of the sulfur-containing compounds studied and the products formed in the presence and absence of NOx. SO2 formation seems to be the main fate of the gas-phase allyl sulfides oxidation with significant acidifying potentials and short-chain aldehydes production like formaldehyde and acetaldehyde
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Palabras Clave
MECHANICSPRODUTCSKINETICSSULFIDES