Catalysis

Pd and WO3 exchange oxygen atoms actively during catalytic CO oxidation.

https://doi.org/10.1016/j.susc.2017.08.007

  • CO oxidation rate over Pd/WO3 depends strongly on the oxidation states of Pd and WO3.
  • The most active phase is a mixture of Pd and PdO supported on WO3-x with W5+ .
  • The role of WO3 as a reversible oxygen storage is suggested.

The active phase on Pt/TiO2 for CO oxidation depends on the reaction temperature!