Temperature-Dependent Kinetic Study of the Reaction of Hydroxyl Radicals with Hydroxyacetone - Archive ouverte HAL
Article Dans Une Revue Journal of Physical Chemistry A Année : 2020

Temperature-Dependent Kinetic Study of the Reaction of Hydroxyl Radicals with Hydroxyacetone

Résumé

The kinetics of the reaction of OH radicals with hydroxyacetone has been investigated as a function of temperature at a total pressure of helium of 2.0-2.1 Torr and over an extended temperature range of T = 250-830 K and as a function of pressure at T = 301 K in the pressure range 1.0-10.4 Torr. The rate constant of the reaction OH + CH3C(O)CH2OH -> products (1) was measured using both absolute (from the kinetics of OH consumption in excess of hydroxyacetone) and relative rate methods (k(1) = 4.7 x 10(-22) x T-3.25 exp (1410/T) cm(3) molecule(-1) s(-1) at T = 250-830 K). The present data combined with selected previous temperature-dependent studies of reaction (1) yield k(1) = 4.4 x 10(-20) x T-2.63 exp (1110/T) cm(3) molecule(-1) s(-1), which is recommended from the present work at T = 230-830 K (with conservative uncertainty of 20% at all temperatures). k(1) was found to be independent of the pressure in the range from 1.0 to 10.4 Torr of He at T = 301 K. The present results are compared with previous experimental and theoretical data.
Fichier principal
Vignette du fichier
accepted manuscript.pdf (455.23 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02559832 , version 1 (03-12-2020)

Identifiants

Citer

Yuri Bedjanian. Temperature-Dependent Kinetic Study of the Reaction of Hydroxyl Radicals with Hydroxyacetone. Journal of Physical Chemistry A, 2020, 124 (14), pp.2863-2870. ⟨10.1021/acs.jpca.0c00429⟩. ⟨hal-02559832⟩
27 Consultations
220 Téléchargements

Altmetric

Partager

More