Aschmann Sara M, Long William D, Atkinson Roger
Air Pollution Research Center, University of California, Riverside, California 92521, USA.
J Phys Chem A. 2006 Jun 1;110(21):6617-22. doi: 10.1021/jp054643i.
The formation yields of 2- and 3-pentyl nitrate from the reactions of 2- and 3-pentyl peroxy radicals with NO have been measured at room temperature over the pressure range 51-744 Torr of N2 + O2, using the OH radical-initiated reaction of n-pentane to generate the pentyl peroxy radicals. The influence of 2- and 3-pentyl nitrate formation from the reaction of 2- and 3-pentoxy radicals with NO2 was investigated by conducting experiments with the initial CH3ONO (the OH radical precursor) and NO concentrations being varied by a factor of 5-10. From experiments carried out with low initial CH3ONO and NO concentrations, the measured yields of 2-pentyl nitrate and 3-pentyl nitrate, defined as ([pentyl nitrate] formed)/([n-pentane] reacted), each increase with increasing total pressure, from 1.10 +/- 0.09% and 1.11 +/- 0.10%, respectively, at 51 +/- 1 Torr of O2 to 5.48 +/- 0.51% and 4.07 +/- 0.31%, respectively, at 737 +/- 4 Torr of N2 + O2.
在室温下，利用正戊烷的OH自由基引发反应生成戊基过氧自由基，在51 - 744托的N₂ + O₂压力范围内，测量了2-戊基过氧自由基和3-戊基过氧自由基与NO反应生成2-硝酸戊酯和3-硝酸戊酯的生成产率。通过改变初始CH₃ONO（OH自由基前体）和NO浓度5 - 10倍进行实验，研究了2-戊氧基自由基和3-戊氧基自由基与NO₂反应生成2-硝酸戊酯和3-硝酸戊酯的影响。从低初始CH₃ONO和NO浓度的实验中，测量的2-硝酸戊酯和3-硝酸戊酯的产率（定义为（生成的[硝酸戊酯]）/（反应的[正戊烷]））均随总压力增加而增加，在51 ± 1托的O₂下分别为1.10 ± 0.09%和1.11 ± 0.10%，在737 ± 4托的N₂ + O₂下分别为5.48 ± 0.51%和4.07 ± 0.31%。
