Optimization of bimetallic dry reforming catalysts by temperature programmed reaction

Catalytic reforming of CH4 with CO2 was investigated on mono and bimetallic Pd(or Pt)-Ni based samples supported on Al2O3 and ZrO2. A simple temperature-programmed procedure was used to study both reforming and coke formation via CH4 or CO decomposition. Catalysts supported on zirconia are more active than alumina-supported samples. The addition of Pt or Pd to Ni/ZrO2, preferably by co-impregnation, prevents coke formation. The co-impregnated Ni-Pd/ZrO2 catalyst looks the most promising for a possible industrial application.

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► A simple temperature-programmed procedure was used.
► Both CH4/CO2 reforming and coke formation via CH4 or CO decomposition were studied.
► Bimetallic Pd(or Pt)-Ni catalysts on zirconia and alumina were investigated.
► The co-impregnated Ni-Pd/ZrO2 catalyst looks the most promising for an industrial application.