Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Kinetics of the gas-phase reactions of NO3 radicals with ethyl acrylate, n-butyl acrylate, methyl methacrylate and ethyl methacrylate
AbstractThe relative rate method has been used to determine the rate constants for the gas-phase reactions of NO3 radicals with a series of acrylate esters: ethyl acrylate (k1), n-butyl acrylate (k2), methyl methacrylate (k3) and ethyl methacrylate (k4) at 298±1K and 760Torr. The obtained rate constants are k1=(1.8±0.25)×10−16cm3molecule−1s−1, k2=(2.1±0.33)×10−16cm3molecule−1s−1, k3=(3.6±1.2)×10−15cm3 molecule−1 s−1, k4=(4.9±1.7)×10−15cm3molecule−1s−1. The experimental rate constants are in good agreement with theoretical rate constants calculated by an algorithm of the correlation between the rate constants and the orbital energies for the reactions of unsaturated VOCs with NO3 radicals. In addition, the atmospheric lifetimes of the compound against NO3 attack are estimated and the results show that NO3 reactions contribute little to the atmospheric losses of acrylate esters except in polluted regions.
Kinetics of the gas-phase reactions of NO3 radicals with ethyl acrylate, n-butyl acrylate, methyl methacrylate and ethyl methacrylate
AbstractThe relative rate method has been used to determine the rate constants for the gas-phase reactions of NO3 radicals with a series of acrylate esters: ethyl acrylate (k1), n-butyl acrylate (k2), methyl methacrylate (k3) and ethyl methacrylate (k4) at 298±1K and 760Torr. The obtained rate constants are k1=(1.8±0.25)×10−16cm3molecule−1s−1, k2=(2.1±0.33)×10−16cm3molecule−1s−1, k3=(3.6±1.2)×10−15cm3 molecule−1 s−1, k4=(4.9±1.7)×10−15cm3molecule−1s−1. The experimental rate constants are in good agreement with theoretical rate constants calculated by an algorithm of the correlation between the rate constants and the orbital energies for the reactions of unsaturated VOCs with NO3 radicals. In addition, the atmospheric lifetimes of the compound against NO3 attack are estimated and the results show that NO3 reactions contribute little to the atmospheric losses of acrylate esters except in polluted regions.
Kinetics of the gas-phase reactions of NO3 radicals with ethyl acrylate, n-butyl acrylate, methyl methacrylate and ethyl methacrylate
Wang, Kun (Autor:in) / Ge, Maofa (Autor:in) / Wang, Weigang (Autor:in)
Atmospheric Environment ; 44 ; 1847-1850
25.02.2010
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Online Contents | 2007
| British Library Online Contents | 2006
FT-Raman Characterization of Methyl Acrylate-Ethyl Acrylate Copolymers
| British Library Online Contents | 2004
Synthesis of Ethyl Acrylate-Methyl Acrylate Copolymers via Emulsion Polymerization
| British Library Online Contents | 2005