Development of catalytic combustion technology of VOC materials by anodic oxidation catalyst

The purpose of this study is to develop an anodic oxidation catalyst to be used as a VOCs removal catalyst. This catalyst consists of a porous alumina film formed on an aluminum plate or aluminum honeycomb and catalytic substances dispersed on the alumina. It therefore has many advantages over conventional catalysts such as: high thermal conductivity and easy to form into various shapes and structures. This paper presents the results of the optimization of the catalyst preparation and the bench scale test of these catalysts. The catalysts were prepared by anodic oxidation of a commercial aluminum plate or aluminum honeycomb monolith followed by the surface nano control process which is called hydration treatment. The characterization of the prepared catalysts was done in the term of pore size distribution and platinum content. The combustion activities were tested by using toluene combustion reaction as the model reaction. The results showed that the anodic oxidation catalystʹs pore size distribution profoundly affected the combustion activity. The catalyst with a bigger pore radius was feasible for this combustion system. We also succeeded in catalyzing an aluminum honeycomb monolith of serrated type and the test at the bench scale reactor showed that even at a very high space velocity of 90000 h−1 this catalyst performed better than the conventional one.