Electrochemical promotion of propane combustion on highly dispersed Pt nanoparticles

A. Kambolis , L. Lizarraga (1) , M. N. Tsampas (1) , M. Rieu , J. P. Viricelle , P. Vernoux (1)

1 AIR - AIR

Pt nanoparticles, in a size range which varies from 3 to 20 nm, were dispersed in the porosity of a 7.5 mu m-thick layer of LSCF-GDC electrode interfaced on a dense GDC membrane. Small positive polarizations (200 mu A / 0.8V - 1.2V) can strongly increase the Pt nanoparticles catalytic performance for propane deep oxidation at low temperatures (267 degrees C-338 degrees C). 40%-enhancement of the propane conversion was achieved with apparent Faraday efficiency values up to 85. These results clearly demonstrate that metallic nanoparticles dispersed in the porosity of a mixed ionic electronic conducting electrode can be electropromoted.

Domaines: Catalyse; Environnement et Société

A. Kambolis, L. Lizarraga, M. N. Tsampas, M. Rieu, J. P. Viricelle, et al.. Electrochemical promotion of propane combustion on highly dispersed Pt nanoparticles. Ionic and Mixed Conducting Ceramics 8, 2012, 45, pp.535-541. ⟨10.1149/1.3701346⟩. ⟨hal-01073448⟩