“…Pd-ceria contact promotes a similar low coordination arrangement, enhancing interfacial interactions and facilitating CH 4 activation, making Pd/CeO 2 suitable for DRM. , Colussi et al showed that the incorporation of Pd atoms into the CeO 2 lattice via solution combustion synthesis outperforms Pd/CeO 2 catalysts prepared by incipient wetness impregnation (IW) in methane oxidation and has remarkable resistance to steam deactivation. , Furthermore, the degree of interaction between Pd and Ce can greatly influence the overall catalytic activity of the material. − Thus, there is a continuous search for methods that enhance metal-oxide interactions and can be used in the preparation of more efficient catalysts, and among these, mechanochemical synthesis is receiving considerable attention. − In particular, the milling of Pd with CeO 2 is a novel and facile method to produce methane oxidation catalysts, forming an active Pd–Ce configuration at the nanoscale level. ,, Pd–Ce-based materials prepared by mechanochemical synthesis were also explored for the partial oxidation of methane, which showed that milling Pd with either an acetate or nitrate precursor resulted in increased activity relative to the preparation via incipient wetness, because of improved dry and steam reforming reactivity occurring at higher temperature. The enhanced performance was attributed to the unique Pd–Ce configuration and increased dispersion offered via milling . This produces a specific surface arrangement where Pd moieties are embedded in the outer layer of ceria particles with unique interfacial Pd–O–Ce sites that are highly effective for methane oxidation, which serves as a basis for extending the study under milder oxidative conditions such as those encountered when CO 2 is used in the presence of methane.…”