DOI: 10.1016/j.atmosenv.2014.07.037
Scopus记录号: 2-s2.0-84904903580
论文题名: Atmospheric degradation of saturated alcohols: Room temperature rate coefficients for NO3 radical reactions
作者: Moreno A ; , Salgado S ; , Taccone R ; , Martín P ; , Cabañas B
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 96 起始页码: 229
结束页码: 235
语种: 英语
英文关键词: Atmospheric chemistry
; FTIR detection method
; Rate coefficients
; Relative technique
; Saturated alcohols
Scopus关键词: Atmospheric chemistry
; Atmospheric pressure
; Carbon
; Esters
; Fourier transform infrared spectroscopy
; Reaction kinetics
; Atmospheric degradation
; Atmospheric implications
; Atmospheric oxidants
; Detection methods
; Rate coefficients
; Relative rate techniques
; Relative technique
; Saturated alcohols
; Molecules
; 2 butanol
; acetaldehyde
; alcohol derivative
; alkane derivative
; butanol
; hydrocarbon
; hydrogen
; hydroxyl radical
; methacrylic acid methyl ester
; nitrate
; propionaldehyde
; propylene
; alcohol
; alkane
; atmospheric pressure
; reaction kinetics
; saturated medium
; temperature effect
; arithmetic
; article
; atmosphere
; atmospheric pressure
; atom
; degradation
; infrared spectroscopy
; priority journal
; radical reaction
; room temperature
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Rate coefficients for the reactions of NO3 radicals with a series of saturated alcohols are reported here using the relative rate technique. Experiments were performed using air as bath gas in a 50L glass-pyrex reaction chamber at room temperature (298±2)K with long-path FTIR spectroscopy used to monitor the reaction at atmospheric pressure (708±8) Torr. The reference compounds used and their rate coefficients are: propanal kNO3=(6.0±0.6)×10-15, methyl methacrylate kNO3=(3.55±0.62)×10-15, acetaldehyde kNO3=(2.62±0.29)×10-15 and propene kNO3=(9.50±1.9)×10-15, in cm3molecule-1s-1. Rate coefficients obtained were (in units cm3 molecule-1s-1): (1.87±0.14)×10-15, (2.39±0.20)×10-15, (2.28±0.17)×10-15, (1.80±0.13)×10-15 and (3.52±0.19)×10-15 for 1-butanol, 2-methyl-1-butanol, 3-methyl-1-butanol, 3,3-dimethyl-1-butanol and 3,3-dimethyl-2-butanol respectively. Reactivity trend can be explained in terms of the different types of hydrogen inside the hydrocarbon chain. The reaction occurs by an initial H-atom abstraction mainly from C-H groups of the alcohols by the NO3 radical being NO3 more reactive towards an H atom attached to a tertiary carbon than that attached to a secondary or primary carbon. Reactivity trend is compared with their similar structural 2-butanol and with the corresponding alkanes. Atmospheric implications are also discussed calculating lifetimes of the saturated alcohols studied here due to the reaction with NO3 radicals in comparison to their reactions with the other major atmospheric oxidants. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81275
Appears in Collections: 气候变化事实与影响
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作者单位: Departamento de Química Física, Facultad de Químicas, Universidad de Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad-Real, Spain; Dpto de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Pabellón Argentina Ala 1 C. Universitaria, CP 5000 Córdoba, Argentina
Recommended Citation:
Moreno A,, Salgado S,, Taccone R,et al. Atmospheric degradation of saturated alcohols: Room temperature rate coefficients for NO3 radical reactions[J]. Atmospheric Environment,2014-01-01,96