A kinetic study of the CH2OO Criegee intermediate reaction with SO2, (H2O)(2), CH2I2 and I atoms using OH laser induced fluorescence

	A kinetic study of the CH2OO Criegee intermediate reaction with SO2, (H2O)(2), CH2I2 and I atoms using OH laser induced fluorescence
	Liu, Yiqiang 1,2; Liu, Fenghua 1; Liu, Siyue 1,2; Dai, Dongxu 1; Dong, Wenrui 1; Yang, Xueming 1
刊名	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
	2017-08-21
卷号	19 期号:31 页码:20786-20794
英文摘要	The OH laser induced fluorescence method was used to study the kinetics of CH2OO reacting with SO2, (H2O)(2), CH2I2 and I atoms. Decay of CH2OO is not strictly first-order since its self-reaction is rapid. With this consideration, we derived the rate coefficient of CH2OO + SO2/(H2O)(2)/CH2I2/I taking into account the contribution of the CH2OO self-reaction. For the CH2OO + SO2 reaction, the rate coefficient is measured to be (3.88 +/- 0.13) x 10(11) cm(3) molecule (1) s (1) at 10 Torr, which agrees very well with a previously reported value obtained by directly monitoring CH2OO using the UV absorption method with the CH2OO self-reaction considered. We did not observe obvious evidence for SO2 catalysed CH2OO isomerization or the intersystem crossing effect in this reaction. CH2OO + (H2O)(2) is supposed to account for the major sink of CH2OO in the atmosphere, but previous rate coefficient measurements were not in good agreement. We have revisited this reaction including the self-reaction of CH2OO and obtained the rate coefficient to be (7.53 +/- 0.38) x 10(12) cm(3) molecule(-1) s(-1) at 60 Torr and 300 K. The rate coefficients of CH2OO + CH2I2 and CH2OO + I were measured to be (5.2 +/- 2.6) x 10(-14) and (2.2 +/- 1.1) x 10 (-12) cm(3) molecule(-1) s(-1) respectively.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]	Chemistry ; Physics
关键词[WOS]	GAS-PHASE REACTIONS ; CONFORMER-DEPENDENT REACTIVITY ; SUBSTITUTED CARBONYL OXIDES ; ABSORPTION CROSS-SECTIONS ; OZONE-ALKENE REACTION ; WATER-VAPOR ; ATMOSPHERIC IMPLICATIONS ; TEMPERATURE-DEPENDENCE ; INFRARED DETECTION ; RADICAL PRODUCTION
收录类别	SCI
语种	英语
WOS记录号	WOS:000407763700049
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/149834]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China 2.Dalian Univ Technol, Sch Phys & Optoelect Engn, Dalian 116023, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yiqiang,Liu, Fenghua,Liu, Siyue,et al. A kinetic study of the CH2OO Criegee intermediate reaction with SO2, (H2O)(2), CH2I2 and I atoms using OH laser induced fluorescence[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2017,19(31):20786-20794.
APA	Liu, Yiqiang,Liu, Fenghua,Liu, Siyue,Dai, Dongxu,Dong, Wenrui,&Yang, Xueming.(2017).A kinetic study of the CH2OO Criegee intermediate reaction with SO2, (H2O)(2), CH2I2 and I atoms using OH laser induced fluorescence.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,19(31),20786-20794.
MLA	Liu, Yiqiang,et al."A kinetic study of the CH2OO Criegee intermediate reaction with SO2, (H2O)(2), CH2I2 and I atoms using OH laser induced fluorescence".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 19.31(2017):20786-20794.