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Open AccessFeature PaperArticle

The Effect of Sr Addition in Cu- and Fe-Modified CeO2 and ZrO2 Soot Combustion Catalysts

Dipartimento Politecnico di Ingegneria e Architettura, Università degli Studi di Udine, via Cotonificio 108, 33100 Udine, Italy
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Academic Editors: Enrique Rodríguez-Castellón, Agustín Bueno-López and Elisa Moretti
Catalysts 2017, 7(1), 28; https://doi.org/10.3390/catal7010028
Received: 27 December 2016 / Revised: 11 January 2017 / Accepted: 11 January 2017 / Published: 17 January 2017
(This article belongs to the Special Issue Ceria-based Catalysts)
This study investigates the activity of transition and alkaline-earth metal-doped catalysts supported on ceria or zirconia for the NOx-assisted oxidation of diesel particulate. A series of Cu- and Fe-impregnated catalysts over CeO2 and ZrO2 supports were prepared by incipient wetness impregnation and characterized by BET, X-ray diffraction (XRD), and temperature-programmed reduction (TPR) experiments while their catalytic activity was investigated in NOx-assisted reaction by means of temperature programmed oxidation experiments (TPO). Higher activity was achieved by copper modified catalysts; the addition of Sr positively affected the performance of the materials, suggesting a synergic effect between transition metals and alkaline-earth metal. The role of copper is correlated to the oxidation of NO to NO2, while strontium seems to be mainly involved in the storage of NOx species. View Full-Text
Keywords: ceria; zirconia; soot oxidation; CuO; Fe2O3; strontium ceria; zirconia; soot oxidation; CuO; Fe2O3; strontium
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MDPI and ACS Style

Rico-Pérez, V.; Aneggi, E.; Trovarelli, A. The Effect of Sr Addition in Cu- and Fe-Modified CeO2 and ZrO2 Soot Combustion Catalysts. Catalysts 2017, 7, 28. https://doi.org/10.3390/catal7010028

AMA Style

Rico-Pérez V, Aneggi E, Trovarelli A. The Effect of Sr Addition in Cu- and Fe-Modified CeO2 and ZrO2 Soot Combustion Catalysts. Catalysts. 2017; 7(1):28. https://doi.org/10.3390/catal7010028

Chicago/Turabian Style

Rico-Pérez, Verónica; Aneggi, Eleonora; Trovarelli, Alessandro. 2017. "The Effect of Sr Addition in Cu- and Fe-Modified CeO2 and ZrO2 Soot Combustion Catalysts" Catalysts 7, no. 1: 28. https://doi.org/10.3390/catal7010028

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