Recently, the use of intermetallics as catalysts in various chemical transformations, such as hydrogenation/dehydrogenation, oxidation, and steam reforming, as well as electrocatalysts for oxygen reduction, and their advantages over random alloys in t...
Recently, the use of intermetallics as catalysts in various chemical transformations, such as hydrogenation/dehydrogenation, oxidation, and steam reforming, as well as electrocatalysts for oxygen reduction, and their advantages over random alloys in the same composition have been reported. Herein, the effect of atomic ordering on the activity for methanol and formic acid oxidation of low‐temperature fuel cell platinum‐based electrocatalysts is discussed, by comparing ordered and disordered structures with the same Pt/M (in which M is the first and second row transition metal) atomic ratio (3 and 1).
For both methanol and formic acid oxidation on Pt3M and PtM (M = transition metal), the specific activity of the ordered structures (SAO) is higher than that of the disordered ones (SAD). The high (SAO/SAD)FAOR ratio is related to the ability of the ordered catalysts to channel the FAOR to the direct pathway. (SAO/SAD)11 ratio is higher than (SAO/SAD)31 ratio.