Scarfogliero Michaël, Picquet-Varrault Bénédicte, Salce Julien, Durand-Jolibois Régine, Doussin Jean-François
Laboratoire Interuniversitaire des Systèmes Atmosphériques, UMR-CNRS 7583, Université Paris 12, 94010 Créteil Cedex.
J Phys Chem A. 2006 Sep 28;110(38):11074-81. doi: 10.1021/jp063357j.
NO(3) oxidation of methyl, ethyl, propyl, and butyl vinyl ethers has been studied under tropospheric conditions (atmospheric pressure and T = 293 +/- 3 K) in the LISA indoor simulation chamber. NO(3) was produced inside the reactor by thermal decomposition of N(2)O(5) previously added to the air-VOC mixture, and concentrations were monitored using FTIR spectrometry. All the kinetic experiments were carried out by relative rate technique using isoprene as reference compound, leading to the rate constants k(1) = (7.2 +/- 1.5) x 10(-13), k(2) = (13.1 +/- 2.7) x 10(-13), k(3) = (13.3 +/- 3.0) x 10(-13), and k(4) = (17.0 +/- 3.7) x 10(-13) cm(3) molecule(-1) s(-1) for methyl, ethyl, propyl, and butyl vinyl ethers, respectively. Main oxidation products have been identified like being formaldehyde and respectively methyl, ethyl, propyl, and butyl formates. Production yields of oxidation products were close to 50%. Oxygenated nitrates and peroxynitrates were also detected.
在LISA室内模拟腔中，研究了在对流层条件（大气压，T = 293 ± 3 K）下，甲基乙烯基醚、乙基乙烯基醚、丙基乙烯基醚和丁基乙烯基醚的NO(3)氧化反应。通过热分解预先添加到空气 - VOC混合物中的N(2)O(5)在反应器内产生NO(3)，并使用傅里叶变换红外光谱法监测其浓度。所有动力学实验均采用相对速率技术，以异戊二烯作为参考化合物进行，得到甲基、乙基、丙基和丁基乙烯基醚的速率常数分别为k(1) = (7.2 ± 1.5)×10(-13)、k(2) = (13.1 ± 2.7)×10(-13)、k(3) = (13.3 ± 3.0)×10(-13)和k(4) = (17.0 ± 3.7)×10(-13) cm(3) molecule(-1) s(-1)。已鉴定出主要氧化产物为甲醛以及相应的甲基、乙基、丙基和丁基甲酸酯。氧化产物的产率接近50%。还检测到了含氧硝酸盐和过氧硝酸盐。
