Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 223, Issue -, Pages 167-176Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2017.06.026
Keywords
Three-way catalyst; Rhodium; Perovskite; NOx; Non-stoichiometric La1-yFe1-xCuxO3
Funding
- European Union [280890-NEXT-GEN-CAT]
- Region Nord-Pas-de-Calais through the <>
- Fonds Europeen de Developpement Regional (FEDER)
- CNRS
- Region Nord Pas-de-Calais
- Ministere de l'Education Nationale de l'Enseignement Superieur et de la Recherche
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A series of La1-yFe1-xCuxO3 catalysts with y=0, 0.33 and x=0, 0.17, 0.2 was prepared by a conventional solgel method. The catalytic activity in Three-Way Catalysis (TWC) of perovskite-based solids was compared to a commercial reference which contains Pd and Rh. The combination of Lanthanum-deficient synthesis and iron substitution by copper in LaFeO3 solid largely contributed to the enhancement of oxidation reactions especially for CO and propene whereas Rh doping activated the NO reduction in stoichiometric conditions. A better yield to nitrogen was obtained with much lower formation of ammonia at high temperature compared to the commercial reference. The characterization of perovskite-based catalyst (XRD, XPS, BET, H-2-TPR) highlighted the specific properties due to Lanthanum-deficient synthesis and iron substitution by copper in LaFeO3. (C) 2017 Elsevier B.V. All rights reserved.
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