Tailoring the properties of BaTi0.8Cu0.2O3 catalyst selecting the synthesis method

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Title: Tailoring the properties of BaTi0.8Cu0.2O3 catalyst selecting the synthesis method
Authors: Albaladejo-Fuentes, Vicente | López Suárez, Franz Edwin | Sánchez-Adsuar, María Salvadora | Illán-Gómez, María José
Research Group/s: Materiales Carbonosos y Medio Ambiente
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica
Keywords: BaTiO3 perovskite | Sol-gel method | Hydrothermal method | NOx storage | Diesel soot oxidation
Knowledge Area: Química Inorgánica
Issue Date: 5-Jun-2016
Publisher: Elsevier
Citation: Applied Catalysis A: General. 2016, 519: 7-15. doi:10.1016/j.apcata.2016.03.022
Abstract: The effect of the synthesis method (hydrothermal and sol-gel) on the properties of BaTi0.8Cu0.2O3 perovskites as catalysts for NOx and soot removal has been analyzed. X-ray powder diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), ICP-AES, N2 adsorption at −196 °C, Raman spectroscopy, Field Emission Scanning Electron Microscopy (FESEM) and temperature programmed reduction with hydrogen (H2-TPR) have been used for catalysts characterization. To test their catalytic activity, NOx storage and soot combustion temperature programmed reaction tests have been carried out. The results allow to conclude that the synthesis method determines the position of copper on the perovskite structure and, therefore, the catalytic applications. When the hydrothermal method is used the copper is highly dispersed on the perovskite surface, obtaining a catalyst with a high activity for the NO to NO2 oxidation reaction, which can be used as oxidation catalyst for soot removal. Nevertheless, using the sol-gel method, copper is incorporated into the perovskite structure and, consequently, the catalyst presents a high NOx storage capacity.
Sponsor: The authors thank the Spanish government (MINECO project CTQ2015-64801-R) for the financial support and Vicente Albaladejo Fuentes thanks the University of Alicante for his Ph.D. grant.
URI: http://hdl.handle.net/10045/62156
ISSN: 0926-860X (Print) | 1873-3875 (Online)
DOI: 10.1016/j.apcata.2016.03.022
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2016 Published by Elsevier B.V.
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.apcata.2016.03.022
Appears in Collections:INV - MCMA - Artículos de Revistas

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