The selected monoliths, primarily composed of aluminum oxide (Al2O3) were coated with mixed metal oxide as an active catalytic phase and later inserted into the walls of the stove in the lower combustion chamber. These Al2O3 foams (porosity of10 ppi) consist of 92% a-Al2O3 along with the trace phases of mullite and cordierite. The results revealed that the catalyst was found to be quite active in terms of oxidation of harmful pollutants e. g. CO and VOC. In addition, two different synthesis routes for mixed metal oxides on the alumina foam were discussed. It was found that, the “Technique 1” proved to be promising as the catalyst showed higher emission reductions, as compared to the one synthesized through the “Technique 2”. Perhaps, it can be attributed to the comparatively high temperature handling of the pre­cursor, thus allowing a more mature crystallization of the active phase struc­ture. Furthermore, the aging experiments were performed with three differ­ent wall catalysts, each consisting of mixed metal oxides but synthesized via different methods. It is quite obvious that each of the three catalysts showed a “thermal activation effect” during the long-term/aging experiments, but this assumption cannot be yet supported due to the lack of catalyst charac­terization, which is planned to be carried out as soon as possible.