Modification of Pd-CeO2 catalyst by different treatments: Effect on the structure and CO oxidation activity

▶ Redox treatment decreases the Pd-CeO2 interface and so decreases the CO oxidation activity. ▶ Pd is encapsulated by the CeO2 support during redox treatment and it is the SMSI mechanism in PM doped catalyst. ▶ CO oxidation over Pd-CeO2 catalyst mainly via ceria mediated mechanism.