The effect of relative concentration of NO and O/sub 2/ in a three component NO-CO-O/sub 2/ reaction for the eley-rideal mechanism

Monte Carlo simulations have been used to explore the effect of the Eley-Rideal (ER) mechanism for three component CO-NO-O/sub 2/ heterogeneous catalytic reaction on hexagonal lattice. The system is studied for CO and XO; where XO is NO and O/sub 2/ with ratio NO:O/sub 2/.The effect of ratio NO:O/sub 2/ on the catalytic reduction of NO into N and O and oxidation of CO to CO/sub 2/ are introduced into the model. Many observations are recorded in this three component reaction. It is observed that with the inclusion of ER mechanism with the Langmuir-Hinshelwood (LH) mechanism, a second order phase transition is eliminated and production of CO/sub 2/ and N 2 starts as soon as t he CO partial pressure departs from zero. The phase diagrams of the surface coverage with CO, N, O and the steady state production of CO/sub 2/ and N/sub 2/2 are shown as a function of partial pressure of CO in the gas phase. (author)