The effect of a third metal on the activity of PtRu/Vulcan towards methanol oxidation reaction (MOR) is studied. An efficient method to prepare ternary catalysts was used, which allows the introduction of the third metal to PtRu/Vulcan without altering its particle size or dispersion. Ni, Mo, Co, and Ir were chosen and added to PtRu/Vulcan, based on theoretical and experimental literature results, anticipating enhancement in the catalytic activity of PtRu/Vulcan. The composition of the third metal can be varied from trace to considerable amounts. TEM and EDX analysis were used to determine the particle size, dispersion and the composition of the ternary catalysts. Cylic voltammetry, chronoamperometry and CO-stripping voltammetry were used to analyze and compare the activities of the catalysts at 25°C. It has been found that addition of even trace amounts of third metal significantly affects the catalytic activity of PtRu towards MOR.
|Autori:||Sivakumar PASUPATHI; Vincenzo TRICOLI|
|Titolo:||Effect of third metal on the electrocatalytic activity of PtRu/Vulcan for methanol electrooxidation|
|Anno del prodotto:||2008|
|Appare nelle tipologie:||1.1 Articolo in rivista|