Atmospheric Chemistry of C3−C6 Cycloalkanecarbaldehydes
| Autor: | Armin Wisthaler, Jyrki Viidanoja, Jens Hjorth, N. R. Jensen, Oyvind Andreasen, Stenstroem Yngve, Armin Hansel, Claus J. Nielsen, Barbara D'Anna |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Air Pollutants
Aldehydes Molecular Structure Atmosphere Hydroxyl Radical Chemistry Infrared Radical Analytical chemistry Mass spectrometry Gas phase Kinetics Cyclization Atmospheric chemistry Torr Alkanes Spectroscopy Fourier Transform Infrared Physical and Theoretical Chemistry Spectroscopy Oxidation-Reduction |
| Zdroj: | The Journal of Physical Chemistry A. 109:5104-5118 |
| ISSN: | 1520-5215 1089-5639 |
| DOI: | 10.1021/jp044495g |
| Popis: | The rate coefficients for the gas phase reaction of NO3 and OH radicals with a series of cycloalkanecarbaldehydes have been measured in purified air at 298 +/- 2 K and 760 +/- 10 Torr by the relative rate method using a static reactor equipped with long-path Fourier transform infrared (FT-IR) detection. The values obtained for the OH radical reactions (in units of 10(-11) cm3 molecule(-1) s(-1)) were the following: cyclopropanecarbaldehyde, 2.13 +/- 0.05; cyclobutanecarbaldehyde, 2.66 +/- 0.06; cyclopentanecarbaldehyde, 3.27 +/- 0.07; cyclohexanecarbaldehyde, 3.75 +/- 0.05. The values obtained for the NO3 radical reactions (in units of 10(-14) cm3 molecule(-1) s(-1)) were the following: cyclopropanecarbaldehyde, 0.61 +/- 0.04; cyclobutanecarbaldehyde, 1.99 +/- 0.06; cyclopentanecarbaldehyde, 2.55 +/- 0.10; cyclohexanecarbaldehyde, 3.19 +/- 0.12. Furthermore, the reaction products with OH radicals have been investigated using long-path FT-IR spectroscopy and proton-transfer-reaction mass spectrometry (PTR-MS). The measured carbon balances were in the range 89-97%, and the identified products cover a wide spectrum of compounds including nitroperoxycarbonyl cycloalkanes, cycloketones, cycloalkyl nitrates, multifunctional compounds containing carbonyl, hydroxy, and nitrooxy functional groups, HCOOH, HCHO, CO, and CO2. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|