Electrochemical promotion of propane deep oxidation on doped lanthanum manganites

Virginie Roche (1, 2) , Elisabeth Siebert (2) , Marlu C. Steil (2) , J. Deloume (1) , Claude Roux (2) , Thierry Pagnier (2) , R. Revel (3) , Philippe Vernoux (1)

1 IRCELYON - Institut de recherches sur la catalyse et l'environnement de Lyon
2 LEPMI - Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces
3 IFPEN - IFP Energies nouvelles

Electrochemical catalysts based on LSM deposited on YSZ were used for propane deep oxidation. Electrochemical characterizations such as impedance spectroscopy and current-overpotential measurements were performed. Different thicknesses of LSM films were catalytically characterized and EPOC experiments were carried out on those electrochemical catalysts. It was found that the reaction rates can be in situ tuned by applying an anodic polarization but with weak promotional effects. The faradaic efficiency decreased as the applied potential, the temperature, and the thickness of the catalyst increased.

Mots clés: catalytic combustion; propane oxidation; impedance spectroscopy; electrochemical catalyst; EPOC; NEMCA; C₃H₈; LSM; yttria-stabilized zirconia

Domaines: Matériaux

Virginie Roche, Elisabeth Siebert, Marlu C. Steil, J. Deloume, Claude Roux, et al.. Electrochemical promotion of propane deep oxidation on doped lanthanum manganites. Ionics, 2008, 14 (3), pp. 235-241. ⟨10.1007/s11581-007-0185-9⟩. ⟨hal-00386248⟩