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A new flow reactor has been developed to study ozonolysis reactions at ambient pressure and room temperature (297 ± 2 K). The reaction kinetics of O3 with 4-methyl-1-pentene (4M1P), 2-methyl-2-pentene (2M2P), 2,4,4-trimethyl-1-pentene (tM1P), 2,4,4-trimethyl-2-pentene (tM2P) and α-pinene have been investigated under pseudo-first-order conditions. Absolute measurements of the rate coefficients have been carried out by recording O3 consumption in excess of organic compound. Alkene concentrations have been determined by sampling adsorbent cartridges that were thermodesorbed and analyzed by gas-chromatography coupled to flame ionization detection. Complementary experimental data have been obtained using a 250 L Teflon smog chamber. The following ozonolysis rate coefficients can be proposed (in cm3 molecule–1 s–1): k4M1P = (8.23 ± 0.50) × 10–18, k2M2P = (4.54 ± 0.96) × 10–16, ktM1P = (1.48 ± 0.11) × 10–17, ktM2P = (1.25 ± 0.10) × 10–16, and kα-pinene = (1.29 ± 0.16) × 10–16, in very good agreement with literat...
| Authors: | Marius Duncianu; Romeo Iulian Olariu; Véronique Riffault; Nicolas Visez; Alexandre Tomas; Patrice Coddeville | |
| Journal: | Journal of Physical Chemistry A | |
| Year: | 2012 | |
| DOI: | 10.1021/jp211480x | |
| Publication date: | 10-02-2012 |
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