Reaction of unsaturated hvdrocarbon radicals studied by laser spectroscopy

激光光谱研究不饱和烃自由基的反应

• 批准号: 10640483
• 负责人: TONOKURA Kenichi
• 金额: $ 2.18万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10640483/
• 关键词: Cavity Ring-Down; vinyl radical; allyl radical; CRDS; 燃焼反応

Knowledge Of the kinetics of unsaturated hydrocarbon free radicals is of primary importance in the modeling of atmospheric and combustion reactions. Vinyl and allyl radicals have been found in abundance in interstellar space, and they have been detected in low temperature planetary atmospheres. They also play a key role in high temperature hydrocarbon combustion systems where they are involved in the formation of polyacethylenes and possibly of polycyclic aromatic hydrocarbons and hence of soot.In the present work, we determined the absorption cross-sections of the vinyl and allyl radical. Based on the reaction kinetic simulation, the absorption cross-sections for the radicals have been determined.Based on the reaction kinetic simulation, the absorption cross-sections of vinyl radical at 446.5 nm was determined to be σ446.5 = (4.8±0.3) × 10^<-19> cm^2 molecule^<-1>.The absorption cross-section of the allyl radical at 402.9 nm was determined to be (2.0±0.4) × 10^<-19> cm^2 molecule^<-1> through analysis of time-dependent absorption traces.

不饱和烃自由基的动力学知识在大气和燃烧反应的模拟中是非常重要的。乙烯基和烯丙基自由基在星际空间中大量存在，在低温行星大气中也被发现。他们也发挥了关键作用，在高温碳氢化合物燃烧系统中，他们参与形成聚乙炔和可能的多环芳烃，因此soods.In目前的工作，我们确定了吸收截面的乙烯基和烯丙基自由基。在反应动力学模拟的基础上，确定了自由基的吸收截面，乙烯基在446.5 nm处的吸收截面为σ446.5 =（4.8±0.3）× 10^<-19>cm ^2 molecule^<-1>，烯丙基在402.9 nm处的吸收截面为（2.0±0.4）× 10^<-19>cm ^2 molecule^<-1>.

项目成果

K.Tonokura, S.Marui and M.Koshi: "Absorption Cross-Section Measurements of the Vinyl Radicals in 440-460 nm Region by Cavity Ring-Down Spectroscopy"Chem.Phys.Lett.. 313. 771-776 (1999)

K.Tonokura、S.Marui 和 M.Koshi：“通过腔衰荡光谱法测量 440-460 nm 区域乙烯基自由基的吸收截面”Chem.Phys.Lett.. 313. 771-776 (1999)

K.Tonokura,S.Marui,M.Koshi: "Absorption Cross-Section measurments of the Vinyl radical in the 440-460nm region by Cavity-ringdown Spectroscopy"Chemical Physics Letters. 313. 771-776 (1999)

K.Tonokura、S.Marui、M.Koshi：“通过腔衰荡光谱法对 440-460nm 区域乙烯基自由基的吸收截面测量”化学物理快报。

K.Tonokura and M.Koshi: "Absorption Spectrum and Cross-Sections of the Allyl Radical Measured Using Cavity Ring-Down Spectroscopy : The A←X Band."Journal of Physical Chemistry A. 104. 8456-8461 (2000)

K.Tonokura 和 M.Koshi：“使用腔衰荡光谱测量的烯丙基自由基的吸收光谱和横截面：A←X 带。”物理化学杂志 A. 104. 8456-8461 (2000)

K.Tonokura,S.Marui,M.Koshi: "Absorption Cross-Section Measurement of the Vingl Radical in the 440-460nm Region by Cavity Ring-Down Spectroscopy"Chemical Physics Letters. 313. 771-776 (1999)

K.Tonokura、S.Marui、M.Koshi：“通过腔衰荡光谱法测量 440-460nm 区域 Vingl 自由基的吸收截面”化学物理快报。

K.Tonokura and M.Koshi: "Absorption Spectrum and Cross-Sections of the Ally Radical Measured using Cavity Ring-Down Spectroscopy : The A←X Band"J.Phys.Chem.A. 104. 8456-8461 (2000)

K.Tonokura 和 M.Koshi：“使用腔衰荡光谱测量的盟友自由基的吸收光谱和横截面：A←X 波段”J.Phys.Chem.A 104. 8456-8461 (2000)