Exhibition and Evaluation of Kinetic Model in Direct Conversion of Methane to Methanol

In the present study the modeling of the reaction kinetic for direct oxidation of methane to methanol, using the ferric molybdate catalyst have been discussed. The operating temperature range was 643- 723K and the pressure was 34 bar. The Eley-Rideal based mechanism with surface reaction as rate determining step has fitted the experimental data well. In this model assumed that at the start of the reaction adsorbed oxygen, in dissociative form reacts with gaseous methane. The kinetic parameters (rate constants and adsorption equilibrium constants) are determined by means of Ant Colony Optimization algorithm (ACO). The selected model parameters were determined and their correspondence with temperature have been discussed. The reaction rate constants were obtained from Arrhenius temperature expression and the equilibrium adsorption constants are obeyed from van't Hoff equilibrium expression.

کلیدواژه ها:

kinetic model ، partial oxidation ، methane ، methanol ، reaction rate