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Mechanism of the chain process forming H2 in the photooxidation of formaldehyde

✍ Scribed by Bernard Veyret; Pascal Roussel; Robert Lesclaux

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
493 KB
Volume
16
Category
Article
ISSN
0538-8066

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✦ Synopsis

A mechanism for the formation in a chain of H,, CO, and HCOOH in the photooxidation of formaldehyde is proposed. This mechanism is initiated by the addition of HO, to formaldehyde. Hydrogen atoms are produced by the thermal dissociation of the HOCH,O radical: HOCH,O -+ H + HCOOH; AH = + 3.2 kcal/mol [51. Photolysis of CHzO-0,-NO mixtures and product analysis were carried out in conjunction with kinetic simulation yielding an estimate for the activation energy of the dissociation reaction : E, = 14.9 2 1.0 kcal/mol. Previous observations of this chain process are considered in view of this mechanism.

πŸ“œ SIMILAR VOLUMES

The effect of temperature on formaldehyd
The effect of temperature on formaldehyde photooxidation in oxygen-lean atmospheres
✍ Yaakov Carmely; Abraham Horowitz πŸ“‚ Article πŸ“… 1984 πŸ› John Wiley and Sons 🌐 English βš– 586 KB

The photooxidation of formaldehyde in CH,0-02, oxygen-lean mixtures was studied in the temperature range 298-378 K. H, and CO formation and the loss of 0, proceed by a chain mechanism, which between 328 and 378 K follows the previously suggested kinetics [l] with one modification. The reaction HO, +