INVESTIGADORES
ARANGUREN ABRATE Juan Pablo
artículos
Título:
Kinectic study of the OH-initiated photo-oxidation of four unsaturated (allyl and vinyl) ethers under simulated atmospheric conditions
Autor/es:
SILVINA A. PEIRONE; JUAN P. ARANGUREN ABRATE; RAÚL A. TACCONE; PABLO M. COMETTO; SILVIA I. LANE
Revista:
ATMOSPHERIC ENVIRONMENT
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2011 vol. 45 p. 5325 - 5331
ISSN:
1352-2310
Resumen:
Using the relative rate technique, rate constants for the gas-phase reactions of hydroxyl radicals with n-propyl vinyl ether (k1), 2-chloroethyl vinyl ether (k2), allyl ether (k3) and allyl ethyl ether (k4) have been measured. Experiments were carried out at 298 K and atmospheric pressure using N2 and ultra pure air as bath gas. Using isoprene, 1-methyl-1-cyclohexene, 2-methyl-2-butene, 3-buten-1-ol and 2-methyl-2-propen-1-ol as reference compounds, the following rate constants were derived: k1 = (11.0 +/- 0.4) x 10-11, k2 = (9 +/- 1) x 10-11, k3 = (6.8 +/- 0.7) x 10-11 and k4 = (4.2 +/- 0.7) x 10-11, in units of cm3 molecule1 s-1. This is the first experimental detcermination of k2-k4. The rate constants obtained are compared with the previous literature data for corresponding alkenes reactions with OH and the observed reactivity trends are discussed. The atmospheric implications of the results are considered.
