Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Relative rate coefficient measurements of OH radical reactions with (Z)-2-hexen-1-ol and (E)-3-hexen-1-ol under simulated atmospheric conditions
Abstract The relative rate technique was used to determine the rate coefficients of the reactions of OH radicals with (Z)-2-hexen-1-ol (k 1), and (E)-3-hexen-1-ol (k 2), at (296 ± 2) K and (750 ± 10) Torr of N2 or pure air. The reactions were investigated using a 200 L Teflon reaction chamber and a gas chromatograph coupled with flame-ionization detection. The following rate coefficients were derived, in units of cm3 mol−1 s−1: k 1 = (1.1 ± 0.4) × 10−10 and k 2 = (0.8 ± 0.1) × 10−10. This is the first experimental determination of k 1 and k 2. A comparison between the experimental rate coefficients (k exp) and the calculated rate coefficients using the structure–activity relationship (SAR) method (k SAR), for the reaction of different unsaturated alcohols with OH radicals is presented. The atmospheric lifetimes of the studied alcohols were estimated considering the rate coefficients of their reactions with OH and NO3 radicals. The radiative efficiencies (REs) were obtained from the infrared spectra of the two hexenols and the global warming potentials (GWPs) were then estimated. Atmospheric implications of the alcohols emission are briefly discussed.
Highlights Reaction rate coefficients for OH radicals with two hexenols were determined. Atmospheric lifetimes of (Z)-2-hexen-1-ol and (E)-3-hexen-1-ol were estimated. GWP calculations for (Z)-2-hexen-1-ol and (E)-3-hexen-1-ol were performed. Atmospheric implications of the alcohols emissions briefly discussed.
Relative rate coefficient measurements of OH radical reactions with (Z)-2-hexen-1-ol and (E)-3-hexen-1-ol under simulated atmospheric conditions
Abstract The relative rate technique was used to determine the rate coefficients of the reactions of OH radicals with (Z)-2-hexen-1-ol (k 1), and (E)-3-hexen-1-ol (k 2), at (296 ± 2) K and (750 ± 10) Torr of N2 or pure air. The reactions were investigated using a 200 L Teflon reaction chamber and a gas chromatograph coupled with flame-ionization detection. The following rate coefficients were derived, in units of cm3 mol−1 s−1: k 1 = (1.1 ± 0.4) × 10−10 and k 2 = (0.8 ± 0.1) × 10−10. This is the first experimental determination of k 1 and k 2. A comparison between the experimental rate coefficients (k exp) and the calculated rate coefficients using the structure–activity relationship (SAR) method (k SAR), for the reaction of different unsaturated alcohols with OH radicals is presented. The atmospheric lifetimes of the studied alcohols were estimated considering the rate coefficients of their reactions with OH and NO3 radicals. The radiative efficiencies (REs) were obtained from the infrared spectra of the two hexenols and the global warming potentials (GWPs) were then estimated. Atmospheric implications of the alcohols emission are briefly discussed.
Highlights Reaction rate coefficients for OH radicals with two hexenols were determined. Atmospheric lifetimes of (Z)-2-hexen-1-ol and (E)-3-hexen-1-ol were estimated. GWP calculations for (Z)-2-hexen-1-ol and (E)-3-hexen-1-ol were performed. Atmospheric implications of the alcohols emissions briefly discussed.
Relative rate coefficient measurements of OH radical reactions with (Z)-2-hexen-1-ol and (E)-3-hexen-1-ol under simulated atmospheric conditions
Peirone, Silvina A. (Autor:in) / Barrera, Javier A. (Autor:in) / Taccone, Raúl A. (Autor:in) / Cometto, Pablo M. (Autor:in) / Lane, Silvia I. (Autor:in)
Atmospheric Environment ; 85 ; 92-98
29.11.2013
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Synthesis of 6-Substituted 1,1,1-Trifluoro-3-hexen-5-yn-2ones
| British Library Online Contents | 1999
| British Library Conference Proceedings | 2007