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Kinetic study of the OH-initiated photo-oxidation of four unsaturated (allyl and vinyl) ethers under simulated atmospheric conditions
Abstract Using the relative rate technique, rate constants for the gas-phase reactions of hydroxyl radicals with n-propyl vinyl ether (k 1), 2-chloroethyl vinyl ether (k 2), allyl ether (k 3) and allyl ethyl ether (k 4) have been measured. Experiments were carried out at (298±2)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: k 1 =(11.0±0.4)×10−11, k 2 =(9±1)×10−11, k 3 =(6.8±0.7)×10−11 and k 4 =(4.2±0.7)×10−11, in units of cm3 molecule−1 s−1. This is the first experimental detcermination of k 2–k 4. 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.
Highlights ► We provide the rate constants of OH radicals with four unsaturated ethers reactions. ► A relative technique at 298K and a pressure of 1atm was used. ► The atmospheric implications of the results are considered.
Kinetic study of the OH-initiated photo-oxidation of four unsaturated (allyl and vinyl) ethers under simulated atmospheric conditions
Abstract Using the relative rate technique, rate constants for the gas-phase reactions of hydroxyl radicals with n-propyl vinyl ether (k 1), 2-chloroethyl vinyl ether (k 2), allyl ether (k 3) and allyl ethyl ether (k 4) have been measured. Experiments were carried out at (298±2)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: k 1 =(11.0±0.4)×10−11, k 2 =(9±1)×10−11, k 3 =(6.8±0.7)×10−11 and k 4 =(4.2±0.7)×10−11, in units of cm3 molecule−1 s−1. This is the first experimental detcermination of k 2–k 4. 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.
Highlights ► We provide the rate constants of OH radicals with four unsaturated ethers reactions. ► A relative technique at 298K and a pressure of 1atm was used. ► The atmospheric implications of the results are considered.
Kinetic study of the OH-initiated photo-oxidation of four unsaturated (allyl and vinyl) ethers under simulated atmospheric conditions
Peirone, Silvina A. (author) / Aranguren Abrate, Juan P. (author) / Taccone, Raúl A. (author) / Cometto, Pablo M. (author) / Lane, Silvia I. (author)
Atmospheric Environment ; 45 ; 5325-5331
2011-06-17
7 pages
Article (Journal)
Electronic Resource
English
Cl atom initiated oxidation of 1-alkenes under atmospheric conditions
| Elsevier | 2012