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Rate constants fot the reactions of OH radicals with hydrocarbons in a smog chamber at low atmospheric temperatures

Title data

Han, Lei ; Siekmann, Frank ; Zetzsch, Cornelius:
Rate constants fot the reactions of OH radicals with hydrocarbons in a smog chamber at low atmospheric temperatures.
In: Atmosphere. Vol. 9 (2018) Issue 8 . - No. 320.
ISSN 2073-4433
DOI: https://doi.org/10.3390/atmos9080320

Abstract in another language

The photochemical reaction of OH radicals with the 17 hydrocarbons n-butane, n-pentane, n-hexane, n-heptane, n-octane, n-nonane, cyclooctane, 2,2-dimethylbutane, 2,2-dimethylpentane, 2,2-dimethylhexane, 2,2,4-trimethylpentane, 2,2,3,3-tetramethylbutane, benzene, toluene, ethylbenzene, p-xylene, and o-xylene was investigated at 288 and 248 K in a temperature controlled smog chamber. The rate constants were determined from relative rate calculations with toluene and n-pentane as reference compounds, respectively. The results from this work at 288 K show good agreement with previous literature data for the straight-chain hydrocarbons, as well as for cyclooctane, 2,2-dimethylbutane, 2,2,4-trimethylpentane, 2,2,3,3-tetramethylbutane, benzene, and toluene, indicating a convenient method to study the reaction of OH radicals with many hydrocarbons simultaneously. The data at 248 K (k in units of 10−12 cm3 s−1) for 2,2-dimethylpentane (2.97 ± 0.08), 2,2-dimethylhexane (4.30 ± 0.12), 2,2,4-trimethylpentane (3.20 ± 0.11), and ethylbenzene (7.51 ± 0.53) extend the available data range of experiments. Results from this work are useful to evaluate the atmospheric lifetime of the hydrocarbons and are essential for modeling the photochemical reactions of hydrocarbons in the real troposphere.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER152000
Keywords: OH radicals; Smog chamber; Rate constant; Hydrocarbons; Low temperatures
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professor Atmospheric Chemistry
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Result of work at the UBT: Yes
DDC Subjects: 500 Science
500 Science > 550 Earth sciences, geology
Date Deposited: 29 Jan 2020 08:05
Last Modified: 29 Jan 2020 08:05
URI: https://eref.uni-bayreuth.de/id/eprint/53929