Insights into the Influence of CeO 2 Crystal Facet on CO 2 Hydrogenation to Methanol over Pd/CeO 2 Catalysts

CeO2 is an excellent potential material for CO2 hydrogenation attributed to the highly tunable properties including metal–support interaction and abundant oxygen vacancy. In this work, four CeO2 supports with structurally well-defined different shapes and crystal facets are hydrothermally prepared, and their effects on the composition of Pd species and oxygen vacancy over Pd/CeO2 catalysts have been intensively investigated in the reduction of CO2 to methanol. The 2Pd/CeO2-R (rods) shows the highest concentration and number of oxygen vacancies, where the (110) facet with high surface oxygen mobility and low oxygen vacancy formation energy is exposed over the CeO2-R surface. The oxygen mobility at the interface…

• NN
  National Natural Science Foundation of China

  Awards: 21706098, 21878127
• GO
  Government of Inner Mongolia Autonomous Region

  Award: 2019GG321
• HE
  Higher Education Discipline Innovation Project

  Award: B13025