The temperature profile of the fixed catalyst bed in methane reforming with CO2 and O2 was investigated over Pt/Al2O3 and Ni/Al2O3. The activities on Pt/Al2O3 and Ni/Al2O3 were in the same level in methane reforming with CO2. On the other hand, the activity of methane combustion over the catalysts was significantly different (Pt/Al2O3 ≫ Ni/Al2O3). In methane reforming with CO2 and O2, methane conversion over Pt/Al2O3 was considerably higher than over Ni/Al2O3. From the profiles of bed temperature measurements under various reaction conditions, one sees that the distance between combustion and reforming zones becomes very short. This is related to the high reducibility of Pt metal itself, and Pt maintains metallic state in the combustion zone and under the presence of oxygen. In this case, the combustion heat can be supplied to the reforming reaction very effectively. The result can be connected to the synthesis gas production with high energy efficiency.
- Heat supply
- Temperature profile