Influence of support on resistance to carbon-deposition of catalyst for CH4, CO2 with O2 to synthesis gas

In the reaction of catalytic oxidation of CH4,CO2 with O2 to synthesis gas, carbon-deposition is an important factor for deactivation. By adding different oxides to Ni/AI2O3 catalyst, its resistance to carbon-deposition was improved. The experimental results indicate that the order of resistance to carbon-deposition is as follows: Ni/CaO-AI2O3>Ni/MgO-AI2O3>Ni/ TiO2-AI2O3>Ni/CeO2-AI2O3>Ni/La2O3-AI2O3>Ni/Y2O3-AI2O3>Ni/Fe2O3-AI2O3>Ni/AI2O3. The catalysts were characterized by CO2-TPD, O2-TPD and XPS methods. Here the relation between the order of resistance to carbon-deposition and performance of catalyst is discussed.