Partager

Document IIF

Recherche sur le mécanisme de décomposition par oxydation du fluoroéthane.

Research on oxidation decomposition mechanism of fluoroethane.

Auteurs : FENG B., ZHAO G., YANG Z., WANG D., MA S.

Type d'article : Article de la RIF

Résumé

Fluoroethane is a potential fluid or component of new environmentally friendly working fluids, but its flammability affects its direct application. The oxidative decomposition mechanism of the working fluid is the key to further study its flammability or stability. Therefore, the oxidative decomposition mechanism of fluoroethane was researched by density functional theory. Firstly, seven initial thermal decomposition paths of fluoroethane and four oxidative decomposition paths involving oxygen were obtained, among which the main initial decomposition products were CH2=CH2 and HF, and the free radicals were ·CH3, ·CH2F, H·, HOO·, etc.; Secondly, the main reaction process of six typical active radicals generated by the chain reaction and fluoroethane was also studied, and it was found that the energy barrier of the hydrogen-extraction reaction was lower than that of the fluorine-extraction reaction, and most of the reactions were exothermic reactions; Finally, the subsequent reaction processes of the main radicals ·CH3 and ·CH2F in the decomposition of fluoroethane were analyzed, and more than 20 possible products and their energy changes were obtained. The relevant results have guiding significance for weakening the flammability of fluoroethane, improving its thermal stability and evaluating its oxidative decomposition products from the deep mechanism.

Documents disponibles

Format PDF

Pages : 35-44

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Research on oxidation decomposition mechanism of fluoroethane.
  • Identifiant de la fiche : 30031143
  • Langues : Anglais
  • Sujet : Alternatives aux HFC
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 148
  • Date d'édition : 04/2023
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2022.12.030

Liens


Voir d'autres articles du même numéro (15)
Voir la source

Indexation