Kinetics of gas phase reactions of OH and Cl with aromatic aldehydes

Thiault, G.; Mellouki, Abdelwahid; Bras, G. Le

doi:10.1039/b200609j

Cited by 21 publications

(17 citation statements)

References 24 publications

(29 reference statements)

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“…"> Abstraction of hydrogen : In this case, the chlorine radical would attack the position of aldehydic hydrogen removing it and generating an intermediate radical. This kind of reactivity has previously been described for the reaction of OH with linear aldehydes, aromatic aldehydes, and furaldehydes, and with linear aldehydes and aromatic aldehydes for Cl reactions 14,29–32. The branching ratio of each mechanism and the rate constants generally depend to a great extent on the type of substituents that are in the aromatic ring of the furan.…”

Section: Discussionmentioning

confidence: 74%

Kinetic study of 2‐furanaldehyde, 3‐furanaldehyde, and 5‐methyl‐2‐furanaldehyde reactions initiated by Cl atoms

Cabañas

Tapia²,

Villanueva³

et al. 2008

Int J of Chemical Kinetics

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Rate coefficients for the gas-phase reactions of chlorine atoms with a series of furanaldehydes have been determined at 298 ± 2 K and atmospheric pressure (708.5 ± 0.1). The experiments were performed using the relative technique combined with solid-phase microextraction (SPME) sampling and gas chromatography with flame ionization detection (GC-FID). Rate constants were determined relative to the reaction of Cl with n-nonane and 2-ethylfuran. The absolute rate coefficients k (in units of 10 −10 cm 3 molecule −1 s −1 ) obtained were 2.61 ± 0.27 for 2-furaldehyde, 3.15 ± 0.27 for 3-furaldehyde, and 4 ± 0.5 for 5-methyl-2-furaldehyde. This study shows that the reactions of furanaldehydes and Cl are very fast with little influence of the position of the aldehyde group or the presence of other substituent on the reactivity. The results seem to indicate a mechanism involving two main reaction channels, addition of chlorine atom to the double bond of the aromatic ring, and the abstraction of the aldehydic hydrogen. Further product studies are necessary to determine the mechanism of these reactions in more detail.

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Section: Discussionmentioning

confidence: 74%

Kinetic study of 2‐furanaldehyde, 3‐furanaldehyde, and 5‐methyl‐2‐furanaldehyde reactions initiated by Cl atoms

Cabañas

Tapia²,

Villanueva³

et al. 2008

Int J of Chemical Kinetics

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“…From a minimum of three experiments, plots of the yields of products versus the amount of consumed styrene gave a molar benzaldehyde, benzoyl chloride, formyl chloride and formaldehyde yield of 22±3%, 28±6%, 24±4% and 29±2%, respectively. The yield for formaldehyde and benzaldehyde have been corrected due to secondary loss reaction with Cl using k (Cl+formaldehyde)=7.8x10 -11 cm 3 molecule -1 s -1 (Niki et al, 1978) and k(Cl+benzaldehyde)=1.0x10 -10 cm 3 molecule -1 s -1 (Thiault et al, 2002) by the method outlined in Tuazon et al (Tuazon et al, 1986). The rate constants with Cl atoms for benzoyl chloride (Caralp et al, 1999) and formyl chloride (Sanhueza, et al, 1975;Niki et al, 1980) have been reported to be fairly low at room temperature, 1.16x10 -15 cm 3 molecule -1 s -1 and 7.8x10 −13 cm 3 molecule -1 s -1 , respectively, so both products have not been corrected for secondary loss.…”

Section: 21-styrenementioning

confidence: 99%

Atmospheric sink of styrene, α-methylstyrene, trans-β-methylstyrene and indene: Rate constants and mechanisms of Cl atom-initiated degradation

Tajuelo

Bravo

Rodrı́guez

et al. 2019

Atmospheric Environment

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“…Volkamer et al [7] determined the rate coefficient for the reaction of 3,5-dimethylbenzaldehyde with OH radicals, also using the relative rate method. The reported values of k OH for the four different DMBA isomers vary considerably, which is somewhat surprising, given that the three isomers of tolualdehyde exhibit very similar reactivity towards OH radicals [8,9].…”

Section: Introductionmentioning

confidence: 93%

Rate coefficients for the gas‐phase reaction of hydroxyl radicals with the dimethylbenzaldehydes

Clifford¹,

Wenger²

2006

Int J of Chemical Kinetics

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Rate coefficients for the reactions of hydroxyl (OH) radicals with the dimethylbenzaldehydes have been determined at 295 ± 2K and atmospheric pressure using the relative rate technique. Experiments were performed in an atmospheric simulation chamber using gas chromatography for chemical analysis. The rate coefficients (in units of cm 3 molecule −1 s −1 ) are: 2,3-dimethylbenzaldehyde, (25.9 ± 2.8) × 10 −12 ; 2,4-dimethylbenzaldehyde, (27.5 ± 4.4) × 10 −12 ; 2,5-dimethylbenzaldehyde, (27.6 ± 5.1) × 10 −12 ; 2,6-dimethylbenzaldehyde, (30.7 ± 3.0) × 10 −12 ; 3,4-dimethylbenzaldehyde, (24.6 ± 4.0) × 10 −12 ; and 3,5-dimethylbenzaldehyde, (28.2 ± 2.5) × 10 −12 . The reactivity of the dimethylbenzaldehydes is compared with other aromatic compounds and it is shown that the magnitude of the OH rate coefficients does not depend significantly on the position of the CH 3 substituent on the aromatic ring. The rate coefficient data are explained in terms of known mechanistic features of the reactions and the atmospheric implications are also discussed.

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Kinetics of gas phase reactions of OH and Cl with aromatic aldehydes

Cited by 21 publications

References 24 publications

Kinetic study of 2‐furanaldehyde, 3‐furanaldehyde, and 5‐methyl‐2‐furanaldehyde reactions initiated by Cl atoms

Kinetic study of 2‐furanaldehyde, 3‐furanaldehyde, and 5‐methyl‐2‐furanaldehyde reactions initiated by Cl atoms

Atmospheric sink of styrene, α-methylstyrene, trans-β-methylstyrene and indene: Rate constants and mechanisms of Cl atom-initiated degradation

Rate coefficients for the gas‐phase reaction of hydroxyl radicals with the dimethylbenzaldehydes

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