Performance of a combustion system is often constrained by limits of pollutant emissions such as CO. Catalytic combustion over noble metals promotes efficient combustion with minimum pollutant formation. In this study, the volumetric percentage of carbon-monoxide distribution along the catalytic flames operating over noble metal disc burners Pt, Pd, and (Pt + Pd) supported on -Al2O3 discs are analyzed through non-linear exponential model function. The numerical prediction correlates the response variable (CO %) with two explanatory (independent) variables: the axial mean temperature and axial distances over each catalytic burner simultaneously. The fitting process indicates high adequacy matching with the experimental data. The response surface construction, with corresponding contour maps, has been established to visually analyze the proposed model equations and to fully identify the extent of the estimated relationship in the combustion domain. These constructions reveal clearly that the response variable (CO %) is mainly dependant on the axial mean temperature distribution and slightly on the axial distances along the catalytic flames and also indicate the effectiveness of the three noble disc burners in reducing CO emissions along the catalytic flames minimizing the environmental pollution.