Pt/YSZ electrochemical catalysts prepared by electrostatic spray deposition for selective catalytic reduction of NO by C₃H₆

Amélie Lintanf (1) , Elisabeth Djurado (1) , Philippe Vernoux (2)

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

Due to the great importance of automotive exhaust gas treatment, the catalytic activity was investigated in selective catalytic reduction of NO by propene on Pt films – with controlled microstructure – deposited on YSZ (8 mol% Y₂O₃-doped ZrO₂) by electrostatic spray deposition. This technique requires low Pt loadings in order to reduce costs and also to achieve high Pt particles dispersion with good reproducibility. This kind of electrochemical catalysts was found to be effective for NO reduction by propene in the presence of oxygen. A dense Pt film was found to be the most suitable. Furthermore, we have demonstrated that these electrochemical catalysts can implement the concept of electrochemical promotion of catalysis (EPOC).

Mots clés: Electrospraying; Thin films; Electrochemical catalyst; NEMCA effect; EPOC

Domaines: Matériaux

Amélie Lintanf, Elisabeth Djurado, Philippe Vernoux. Pt/YSZ electrochemical catalysts prepared by electrostatic spray deposition for selective catalytic reduction of NO by C₃H₆. Solid State Ionics, 2008, 178 (39-40), pp. 1998-2008. ⟨10.1016/j.ssi.2008.01.008⟩. ⟨hal-00386321⟩