Mechanistic Insights into the Role of CH 4 and CO 2 Activation in Dry Reforming of Methane over Ni/CeO 2 Catalysts with Different Crystal Planes

The activation of CH4 and CO2 as well as the formation of carbon deposit are crucial for dry reforming of methane (DRM), and mechanistic insights into the relationship between reactant activation and carbon evolution during the DRM process are expected to provide guidance for the design of high-performance catalysts. Herein, by utilizing carefully defined Ni/CeO2 model catalysts with different CeO2 crystal planes, we elucidate at the atomic scale the roles of crystal plane in determining the reactant activation and carbon deposit formation in DRM by a joint experimental–theoretical method. The crystal planes of CeO2 determine the active sites and activation ability for CH4 and CO2 by influencing Ni–CeO2…

• NN
  National Natural Science Foundation of China

  Awards: 52174279, U2202251
• MS
  Major Science and Technology Projects in Yunnan Province

  Award: 202302AG050005