Ordered mesoporous Cu-Ce-O catalysts for CO preferential oxidation in H2-rich gases: Influence of copper content and pretreatment conditions

- Nanocasting synthesis of mesoporous Cu-Ce-O catalysts with different Cu contents.
- The mesostructural order is influenced by the ratio of Cu to Ce.
- The CO-PROX activity increases with the Cu content and then becomes stable.
- The redox cycling benefits the performance.
- One-step method benefits the long-term behavior than the two-step loading method.