Isotopical labeling mechanistic studies of electrochemical promotion of propane combustion on Pt/YSZ

Isotopical labeling studies were performed on a Pt/YSZ electrochemical catalyst for operando investigating mechanisms involved in the electrochemical activation of propane combustion. This study clearly confirms the sacrificial promoter model and highlights the significant contribution of a surface oxygen exchange mechanism in the catalytic rate both under open circuit and anodic polarization conditions. (C) 2012 Elsevier B.V. All rights reserved.