Fig. 7
Conceptual diagram of the proposed reduction of Co oxide by spillover H. Initially, mono-atomically dispersed Rh catalyses the partial oxidation of methane (POM) to syngas in small quantities. Rh liberates atomic H species either by the dissociation of H2 formed in POM or from intermediates of POM. The H species spill over onto the catalyst support and reduce neighbouring Co oxide particles to Co metal
