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Artículo

Gas-phase kinetics of OH radicals reaction with a series of fluorinated acrylates and methacrylates at atmospheric pressure and 298 K

Teruel, Mariano AndresIcon ; Tovar Ramos, Carmen Maria
Fecha de publicación: 05/2014
Editorial: Pergamon-Elsevier Science Ltd.
Revista: Atmospheric Environment
ISSN: 1352-2310
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Químicas

Resumen

Rate coefficients for the gas phase reactions of OH radicals with 2,2,2-trifluoroethylmethacrylate (k1) 1,1,1,3,3,3-hexafluoroisopropylacrylate (k2), 1,1,1,3,3,3-hexafluoroisopropylmethacrylate (k3), and 2,2,2-trifluoroethylacrylate (k4) were determinated to be k1 = (2.54 ± 0.12) × 10−11, k2 = (1.41 ± 0.11) × 10−11, k3 = (1.65 ± 0.14) × 10−11 and k4 = (1.25 ± 0.13) × 10−11 cm3 molecule−1 s−1, respectively. Kinetic experiments were performed at room temperature and atmospheric pressure using the relative-rate technique with GC-FID analysis. This study is the first kinetic for these reactions of OH radicals under atmospheric pressure. Additionally, the rate constants obtained are compared with other halogenated and non halogenated acrylates and methacrylates to develop structure/reactivity relationships in terms of the presence of fluorine and ester groups and the hydrocarbon chain length. The atmospheric implications of the reactions were assessed by the estimation of the tropospheric lifetimes of the title reactions.
Palabras clave: 2,2,2-Trifluoroethylmethacrylate , 1,1,1,3,3,3-Hexafluoroisopropylacrylate , 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate , 2,2,2-Trifluoroethylacrylate , Rate Coefficients , Tropospheric Chemistry
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/31365
DOI: http://dx.doi.org/10.1016/j.atmosenv.2014.05.057
URL: http://www.sciencedirect.com/science/article/pii/S135223101400404X
Colecciones
Articulos(INFIQC)
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Citación
Tovar Ramos, Carmen Maria; Teruel, Mariano Andres; Gas-phase kinetics of OH radicals reaction with a series of fluorinated acrylates and methacrylates at atmospheric pressure and 298 K; Pergamon-Elsevier Science Ltd.; Atmospheric Environment; 94; 5-2014; 489-495
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