Drastic selectivity change by SMSI effect in the CO-H2 reaction over Pd/CeO2

Article abstract of DOI:10.1246/cl.1998.941

Selectivity of CO-H₂ reaction over Pd/CeO₂ changed drastically from methanol to methane by higher temperature reduction (SMSI effect) Facile isotopic exchange reaction of ¹²C¹⁸O-¹³C¹⁰O indicated the dissociative adsorption of CO over reduced Pd/CeO₂, which corresponds to the acceleration of methane formation Infrared spectroscopic investigation during the reaction suggested that methanol formation sites were formed by the transformation of methane formation sites.