Effects of Y2O3-modification to Ni/γ-Al2O3 catalysts on autothermal reforming of methane with CO2 to syngas

► Ni/γ-Al2O3 catalysts were modified with different amounts of Y2O3. ► Catalysts for autothermal reforming of methane into syngas. ► The introduction of Y2O3 improves the activity and stability of the catalyst. ► Ni/Y2O3·γ-Al2O3 catalysts exhibit good activity and stability in the reaction.