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A kinetic study of the CH2OO Criegee intermediate reaction with SO2, (H2O)(2), CH2I2 and I atoms using OH laser induced fluorescence
Liu, Yiqiang1,2; Liu, Fenghua1; Liu, Siyue1,2; Dai, Dongxu1; Dong, Wenrui1; Yang, Xueming1
Source PublicationPHYSICAL CHEMISTRY CHEMICAL PHYSICS
2017-08-21
DOI10.1039/c7cp04336h
Volume19Issue:31Pages:20786-20794
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Physics
WOS KeywordGAS-PHASE REACTIONS ; CONFORMER-DEPENDENT REACTIVITY ; SUBSTITUTED CARBONYL OXIDES ; ABSORPTION CROSS-SECTIONS ; OZONE-ALKENE REACTION ; WATER-VAPOR ; ATMOSPHERIC IMPLICATIONS ; TEMPERATURE-DEPENDENCE ; INFRARED DETECTION ; RADICAL PRODUCTION
AbstractThe 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.
Language英语
WOS IDWOS:000407763700049
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/149834
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
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.
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