STRACCIA CEPEDA VIANNI GIOVANNA
Artículos
Título:
Atmospheric chemistry of trifluorodicarbonyls initiated by Cl atoms: Reactivity trends, mechanism, and acid formation yields
Autor/es:
LUGO, PEDRO L.; STRACCIA, VIANNI G.; RIVELA, CYNTHIA B.; TERUEL, MARIANO A.; BLANCO, MARÍA B.
Revista:
JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
Editorial:
SCIENCE PRESS
Referencias:
Año: 2024
ISSN:
1001-0742
Resumen:
ate coefficients of the gas-phase reactions of Cl atoms with a series of fluorinated diketones (FDKs): CF3C(O)CH2C(O)CH3 (TFP), CF3C(O)CH2C(O)CH2CH3 (TFH) and CF3C(O)CH2C(O)CH(CH3)2 (TFMH), have been measured at (298 ± 2) K and under atmospheric pressure. The experiments were performed using the relative-rate method with a GC-FID detection system. From different determinations and references used, the following rate coefficients were obtained (in cm3/(molecule·sec)): k4(TFP + Cl) = (1.75 ± 0.21) × 10−10, k5(TFH + Cl) = (2.05 ± 0.23) × 10−10, k6(TFMH + Cl) = (2.71 ± 0.34) × 10−10. Reactivity trends of FDKs were discussed and Free Energy Relationships analysis was developed. The expression lgkOH = 1.68 lgkCl + 5.71 was obtained for the reactivity of the studied FDKs together with similar unsaturated VOCs with Cl and OH radicals Additionall
