Issue 23, 2021

Kinetics of CH2OO and syn-CH3CHOO reaction with acrolein

Abstract

The kinetics for the reactions of CH2OO and syn-CH3CHOO with acrolein, a typical unsaturated aldehyde in the atmosphere, were studied in a flash photolysis flow reactor using the OH laser-induced fluorescence (LIF) method. The bimolecular reaction rate coefficients were measured at temperatures ranging from 281 to 318 K, and pressures ranging from 5 to 200 Torr. No obvious dependence of the rate coefficients on pressure was observed under the current experimental conditions. Both reactions exhibit negative temperature-dependence, with an activation energy of (−1.70 ± 0.19) and (−1.47 ± 0.24) kcal mol−1 for CH2OO and syn-CH3CHOO reacting with acrolein, derived from the Arrhenius equation. At 298 K, the measured rate coefficients for CH2OO/syn-CH3CHOO + acrolein reactions are (1.63 ± 0.19) × 10−12 cm3 s−1 and (1.17 ± 0.16) × 10−13 cm3 s−1, respectively. The rate coefficient of the former reaction is in reasonable agreement with a recent theoretical result.

Graphical abstract: Kinetics of CH2OO and syn-CH3CHOO reaction with acrolein

Supplementary files

Article information

Article type
Paper
Submitted
02 Feb 2021
Accepted
10 May 2021
First published
19 May 2021

Phys. Chem. Chem. Phys., 2021,23, 13276-13283

Kinetics of CH2OO and syn-CH3CHOO reaction with acrolein

X. Zhou, Y. Chen, Y. Liu, X. Li, W. Dong and X. Yang, Phys. Chem. Chem. Phys., 2021, 23, 13276 DOI: 10.1039/D1CP00492A

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