Study of the Reaction Rate for Reactive Binary Gaseous Mixtures

Study of the Reaction Rate for Reactive Binary Gaseous Mixtures

SILVA, Adriano Willian da; MARTINS, Kayk Bueno; VILKEVICIUS, Luan Nogueira

Artigo:

A binary gaseous mixture with reversible reaction of type A+A ⇄ B+B is studied with Boltzmann equation, assuming hard spheres cross sections for elastic collisions and step model for reactive interactions. The Chapman-Enskog method is used to obtain the solution of the Boltzmann equation in a chemical regime for which reactive interactions are of the same order as the elastic one, i.e. in the system is closed to the final stage of a chemical reaction where the affinity is considered to be a small quantity and the system tends to the chemical equilibrium. The internal degrees of freedom of the particles of the gas are not taken into account. The aim of this paper is to evaluate the approximation second of the forward reaction rate coefficient and global reaction rate. It was verified the reaction heat changes the reaction rate and these changes are great for slow activation energy.

A binary gaseous mixture with reversible reaction of type A+A ⇄ B+B is studied with Boltzmann equation, assuming hard spheres cross sections for elastic collisions and step model for reactive interactions. The Chapman-Enskog method is used to obtain the solution of the Boltzmann equation in a chemical regime for which reactive interactions are of the same order as the elastic one, i.e. in the system is closed to the final stage of a chemical reaction where the affinity is considered to be a small quantity and the system tends to the chemical equilibrium. The internal degrees of freedom of the particles of the gas are not taken into account. The aim of this paper is to evaluate the approximation second of the forward reaction rate coefficient and global reaction rate. It was verified the reaction heat changes the reaction rate and these changes are great for slow activation energy.

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DOI: 10.5151/phypro-vii-efa-014

Referências bibliográficas

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Como citar:

SILVA, Adriano Willian da; MARTINS, Kayk Bueno; VILKEVICIUS, Luan Nogueira; "Study of the Reaction Rate for Reactive Binary Gaseous Mixtures", p-53-58. In: <strong>Anais do VII Encontro Científico de Física Aplicada [=Blucher Physics Proceedings, v.3 n.1]</strong>. São Paulo: Blucher, 2016.
ISSN 23582359, DOI 10.5151/phypro-vii-efa-014