Effect of different metal promoters on ni-based catalyst for CO2 reforming and partial oxidation of methane to syngas

Abstract

The combining CO2 reforming and partial oxidation of methane to syngas over modified Ni catalysts has been researched. A series of alkali metal and alkaline earth metal-modified Ni catalysts have been prepared by co-impregnation. The catalytic activity of these catalysts was evaluated by conducting the combining CO2 reforming and partial oxidation of methane in a fixed-bed reactor. Results of the investigation suggested that alkaline earth metal-modified Ni catalysts exhibited an excellent catalytic activity and stability in comparison with with alkali metal-modified Ni catalysts in the combined reaction processes. The order of catalytic activity among these catalysts was 12Ni-2Ca/Al2O3> 12Ni-2Ba/Al2O3>12Ni-2Mg/Al2O 3>12Ni-2Na/Al2O3>12Ni-2K/Al 2O3.