1. Catalytic and Electrochemical Properties of Ag Infiltrated Perovskite Coatings for Propene Deep Oxidation
- Author
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Daniel Marinha, A. Caravaca, Jean-Paul Viricelle, I. Kalaitzidou, Laurence Burel, Philippe Vernoux, Benjamin Rotonnelli, Thai Giang Truong, Helena Kaper, Mathilde Rieu, laboratoire de synthèse et fonctionnalisation des céramiques (LSFC), SAINT-GOBAIN-Centre National de la Recherche Scientifique (CNRS), Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Département Procédés de Transformations des Solides et Instrumentation (PTSI-ENSMSE), Centre Sciences des Processus Industriels et Naturels (SPIN-ENSMSE), École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Laboratoire Georges Friedel (LGF-ENSMSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Saint-Gobain CREE/ UMR 3080 CNRS/ Laboratoire de Synthèse et Fonctionnalisation des Céramiques, and Université Claude Bernard Lyon 1 - CNRS - IRCELYON
- Subjects
Materials science ,chemistry.chemical_element ,Ionic bonding ,02 engineering and technology ,010402 general chemistry ,Electrochemistry ,lcsh:Chemical technology ,7. Clean energy ,01 natural sciences ,Oxygen ,Catalysis ,Propene ,lcsh:Chemistry ,chemistry.chemical_compound ,Cubic zirconia ,[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering ,lcsh:TP1-1185 ,Physical and Theoretical Chemistry ,Yttria-stabilized zirconia ,Perovskite (structure) ,self-sustained electrochemical promotion ,silver catalyst ,propene oxidation ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Chemical engineering ,chemistry ,lcsh:QD1-999 ,0210 nano-technology ,mixed ionic electronic conductor ,VOC abatement - Abstract
This study reports the catalytic properties of Ag nanoparticles dispersed on mixed ionic and electronic conducting layers of LSCF (La0.6Sr0.4Co0.2Fe0.8O3) for propene combustion. A commercial and a synthesized LSCF powder were deposited by screen-printing or spin-coating on dense yttria-stabilized zirconia (YSZ) substrates, an oxygen ion conductor. Equal loadings (50 µ, g) of Ag nanoparticles were dispersed via drop-casting on the LSCF layers. Electrochemical and catalytic properties have been investigated up to 300 °, C with and without Ag in a propene/oxygen feed. The Ag nanoparticles do not influence the electrochemical reduction of oxygen, suggesting that the rate-determining step is the charge transfer at the triple phase boundaries YSZ/LSCF/gas. The anodic electrochemical performances correlate well with the catalytic activity for propene oxidation. This suggests that the diffusion of promoting oxygen ions from YSZ via LSCF grains can take place toward Ag nanoparticles and promote their catalytic activity. The best specific catalytic activity, achieved for a LSCF catalytic layer prepared by screen-printing from the commercial powder, is 800 times higher than that of a pure Ag screen-printed film.
- Published
- 2020
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