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DOI	10.5194/acp-22-6989-2022
	Kinetic study of the atmospheric oxidation of a series of epoxy compounds by OH radicals
	Tovar, Carmen Maria; Barnes, Ian; Bejan, Iustinian Gabriel; Wiesen, Peter
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	6989
结束页码	7004
卷号	22 期号:10 页码:16
英文摘要	In this work, we study the kinetics of the gas-phase reactions of hydroxyl radicals with cyclohexene oxide (CHO), 1,2-epoxyhexane (EHX), 1,2-epoxybutane (12EB), trans-2,3-epoxybutane (tEB) and cis-2,3-epoxybutane (cEB) using the relative rate technique. The experiments were conducted at (298 +/- 3) K and (760 +/- 10) Torr ((1.01 +/- 0.01) x 10(5) Pa) total pressure of synthetic air using different reference compounds in a 1080 L Quartz Reactor (QUAREC) and a 480 L Duran glass chamber. The following room temperature rate coefficients (cm(3) molecule(-1) s(-1)) were obtained: k(1)(OH+CHO) = (5.93 +/- 1.13) x 10(-12) , k(2)(OH+EHX) = (5.77 +/- 0.83)x 10(-12), k(3)(OH+12EB) = (1.98 +/- 0.29)x 10(-12) , k(4)(OH+cEB) = (1.50 +/- 0.28)x 10(-12) and k(5)(OH+tEB) = (1.81 +/- 0.33) x 10(-12). Except for previous studies on 1,2-epoxybutane and cyclohexene oxide, this is, to the best of our knowledge, the first kinetic study of the reaction of these compounds with OH radicals. We discuss the discrepancies found between the values obtained from the present study with values estimated from the structure- activity relationship method (SAR). Our findings indicate that pseudo-ethylenic character in the epoxy ring is an important factor to be included in the improvement of the SAR estimation method. Atmospheric lifetimes, reactivity trends and atmospheric implications are discussed considering the epoxy compound rate coefficients obtained in the present study.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000803021300001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273616
作者单位	University of Wuppertal; Alexandru Ioan Cuza University; Alexandru Ioan Cuza University
推荐引用方式 GB/T 7714	Tovar, Carmen Maria,Barnes, Ian,Bejan, Iustinian Gabriel,et al. Kinetic study of the atmospheric oxidation of a series of epoxy compounds by OH radicals[J],2022,22(10):16.
APA	Tovar, Carmen Maria,Barnes, Ian,Bejan, Iustinian Gabriel,&Wiesen, Peter.(2022).Kinetic study of the atmospheric oxidation of a series of epoxy compounds by OH radicals.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(10),16.
MLA	Tovar, Carmen Maria,et al."Kinetic study of the atmospheric oxidation of a series of epoxy compounds by OH radicals".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.10(2022):16.