Analysis of the Rate of Reaction for Quaternary Gaseous Mixtures near the chemical equilibrium
Adriano Willian da Silva1; Kayk Bueno Martins1; Atiria Sbrissia1; Luan Nogueira Vilkevicios1
1 Instituto Federal do Paraná- campus Curitiba
doi:10.20906/CPS/CON-2016-0197
Resumo
A quaternary gaseous mixture with reversible reaction of type A+B= C+D is studied with Boltzmann equation, assuming hard spheres cross sections for elastic collisions and the line-of-center to reactive collisions. The Chapman-Enskog method is used to obtain the solution of the Boltzmann equation in a chemical regime for wich the 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 reaction rate coefficient of the mixture and global reaction rate. It was verified by some factors- the concentration of the reagents, the masse and diameter of the particles, the activation energy and the heat of reaction. Theses factors changes the reaction rate and the modifications are great for small values of the activation energy for reactive interactions.
Palavras-chave: quaternary gaseous ; Boltzmann equation ; reaction rate