Kinetic Study of Ethanol and Methanol Electro-oxidation on Pd-vulcan XC-72R/Cu Electrocatalyst in Alkaline Media, By Ali Saberimehr

Research

Title	Kinetic Study of Ethanol and Methanol Electro-oxidation on Pd-vulcan XC-72R/Cu Electrocatalyst in Alkaline Media
Type	Article
Keywords	Direct Alcohol Fuel Cell Electro-Oxidation Ethanol Kinetics Methanol
Researchers	Mojtaba Zar، hadi Tabaian، hamid Omidvar، Ali Saberimehr، Ghader Hosseinzadeh

Abstract

In this study, palladium nano-particles were electrodeposited galvanostatically on carbon black powder (Vulcan XC-72R). The catalytic activity for electro-oxidation of ethanol and methanol in alkaline media were studied by cyclic voltammetry and linear sweep voltammetry techniques. The results indicated that the electro-oxidation of ethanol and methanol strongly depends on adsorbed species on the electrocatalyst layer. Effects of ethanol, methanol and KOH concentration on the electrocatalytic properties of the synthesized electrocatalysts during electro-oxidation reactions were evaluated by linear sweep voltammetry with various scan rates. The overall rate equations for ethanol electro-oxidation and methanol electro-oxidation on Palladium /Vulcan in alkaline media were developed. It has been shown that the Pd-C particles with mass loading of 0.11 mg cm–2 have superior catalytic activity. Finally, two overall rate equations were developed for EOR and MOR.