Kinetic and DRIFTS studies of IrRu$/$Al$2$O$3$ catalysts for lean NOx reduction by CO

at low temperature:

Removal of O species on the catalyst surface $($which would be the oxidation of CO into CO$2$ under the current reaction$)$ could also be the RDS$.$

Derive the equation:

$C{O}^{**}+O^{**}C{O}_2^{**}+**C{O}_2$uarr$+2^{**},r=k^{\text{'}}{}_{CO}{}_O$

${}_{CO}=\frac{K_{CO}^{\text{'}}{P}_{CO}}{1+K_{CO}^{\text{'}}{?}_{CO}{P}_{CO}+2(K_{NO}^{\text{'}}{P}_{NO}{)}^{\frac{1}{2}}}$

${}_O=\frac{(K_{NO}^{\text{'}}{P}_{NO}{)}^{\frac{1}{2}}}{1+K_{CO}^{\text{'}}{P}_{CO}+2(K_{NO}^{\text{'}}{P}_{NO}{)}^{\frac{1}{2}}}$