Ozonolysis of a series of C7-C9 unsaturated biogenic aldehydes: reactivity study at atmospheric pressure

被引：10
作者：
Colman, Elizabeth Gaona [1 ]
Blanco, Maria B. [1 ]
Barnes, Ian [2 ]
Teruel, Mariano A. [1 ]
机构：
[1] Univ Nacl Cordoba, Dept Quim Fis, CONICET, INFIQC,Fac Ciencias Quim, RA-5000 Cordoba, Argentina
[2] Berg Univ Wuppertal, FBC, Phys & Theoret Chem, Wuppertal, Germany
来源：
RSC ADVANCES | 2015年 / 5卷 / 39期
关键词：
GAS-PHASE REACTION; ORGANIC-COMPOUNDS; RATE CONSTANTS; VOLATILE COMPOUNDS; ATOMIC CHLORINE; NO3; RADICALS; OZONE; OH; HYDROXYL; KINETICS;
D O I：
10.1039/c4ra17283c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Rate coefficients for the reactions of O-3 with trans-2-heptenal, trans-2-octenal and trans-2-nonenal have been determined at 298 K and (990 +/- 10) mbar in an environmental chamber with in situ FTIR spectroscopy. The following rate coefficients in units of k(O3) x 10(18) (cm(3) molecule(-1) s(-1)) were obtained: (2.47 +/- 0.73) for trans-2-heptenal, (2.37 +/- 0.68) for trans-2-octenal and (2.05 +/- 0.20) for trans-2-nonenal. It is shown that rate coefficients for the addition of O-3 molecules and OH radicals to the double bond of alkenes and unsaturated and oxygenated volatile organic compounds (OVOCs) at 298 K are related to a good approximation by the expression: log k(OH) = 0.16 log k(O3) - 7.55. Furthermore, a correlation between the reactivity of unsaturated VOCs toward O-3 molecules and the energies of the Highest Occupied Molecular Orbit (HOMO) of the unsaturated VOCs is presented and potential atmospheric implications of the results are discussed.
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收藏
页码：30500 / 30506
页数：7
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