Jc. Menezo et al., EFFECT OF THE DOPING OF A METAL-OXIDE BY PLATINUM ON ITS OXIDIZING PROPERTIES, Reaction kinetics and catalysis letters, 49(2), 1993, pp. 293-298
Oxidation is very slow on supported metals or oxides whose contact sur
face between the catalytic active phase and the carbonaceous particle
to burn in poor. On the contrary, some pure oxides are more active. Ox
idation by oxygen proceeds by partial reduction of the oxide and the r
ate-determining step of the reaction is the reoxidation of the reduced
solid. Addition of a small amount of platinum catalyzes that reoxidat
ion.