Preferential oxidation of CO in excess H2 over CuO/CeO2 catalysts: Characterization and performance as a function of the exposed face present in the CeO2 support. Gamarra, D, Cámara, A L., Monte, M, Rasmussen, S B, Chinchilla, L E, Hungría, A B, Munuera, G, Gyorffy, N, Schay, Z, Corberán, V C., Conesa, J C, & Martínez-Arias, A Applied Catalysis B: Environmental, 130–131(0):224–238, 2013.
Paper doi abstract bibtex A series of oxidised copper-cerium nanostructured catalysts prepared by impregnation of copper over ceria supports synthesized by different methods (hydrothermal with varying preparation parameters, microemulsion/precipitation), in order to achieve different specific morphologies (nanocubes, nanorods and nanospheres), have been examined with respect to their catalytic properties for preferential oxidation of CO in excess H2 (CO-PROX). The catalysts have been characterized in detail by XRD, Raman, SBET measurement, HREM, XPS, TPR and EPR, which allows establishing a model of structural characteristics of the catalysts. The characterization results have been correlated with analysis of CO-PROX catalytic properties by means of catalytic activity measurements complemented by operando-DRIFTS. Structural dependence of the CO oxidation reaction on the dispersed copper oxide entities as a function of the exposed face present at the surface of the different ceria supports is revealed. An important overall enhancement of the CO-PROX performance is detected for the sample supported on ceria nanocubes which is proposed to be a consequence of the interaction between copper oxide and (1 0 0) faces of the ceria support.
@article{Gamarra2013,
abstract = {A series of oxidised copper-cerium nanostructured catalysts prepared by impregnation of copper over ceria supports synthesized by different methods (hydrothermal with varying preparation parameters, microemulsion/precipitation), in order to achieve different specific morphologies (nanocubes, nanorods and nanospheres), have been examined with respect to their catalytic properties for preferential oxidation of CO in excess H2 (CO-PROX). The catalysts have been characterized in detail by XRD, Raman, SBET measurement, HREM, XPS, TPR and EPR, which allows establishing a model of structural characteristics of the catalysts. The characterization results have been correlated with analysis of CO-PROX catalytic properties by means of catalytic activity measurements complemented by operando-DRIFTS. Structural dependence of the CO oxidation reaction on the dispersed copper oxide entities as a function of the exposed face present at the surface of the different ceria supports is revealed. An important overall enhancement of the CO-PROX performance is detected for the sample supported on ceria nanocubes which is proposed to be a consequence of the interaction between copper oxide and (1 0 0) faces of the ceria support.},
author = {Gamarra, D and C\'{a}mara, A L\'{o}pez and Monte, M and Rasmussen, S B and Chinchilla, L E and Hungr\'{\i}a, A B and Munuera, G and Gyorffy, N and Schay, Z and Corber\'{a}n, V Cort\'{e}s and Conesa, J C and Mart\'{\i}nez-Arias, A},
doi = {http://dx.doi.org/10.1016/j.apcatb.2012.11.008},
issn = {0926-3373},
journal = {Applied Catalysis B: Environmental},
keywords = {CO-PROX,EPR,HREM,Nanostructured CuO-CeO2 catalysts,Operando-DRIFTS,Raman,TPR,XPS,XRD},
number = {0},
pages = {224--238},
title = {{Preferential oxidation of CO in excess H2 over CuO/CeO2 catalysts: Characterization and performance as a function of the exposed face present in the CeO2 support}},
url = {http://www.sciencedirect.com/science/article/pii/S0926337312005206},
volume = {130–131},
year = {2013}
}
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The catalysts have been characterized in detail by XRD, Raman, SBET measurement, HREM, XPS, TPR and EPR, which allows establishing a model of structural characteristics of the catalysts. The characterization results have been correlated with analysis of CO-PROX catalytic properties by means of catalytic activity measurements complemented by operando-DRIFTS. Structural dependence of the CO oxidation reaction on the dispersed copper oxide entities as a function of the exposed face present at the surface of the different ceria supports is revealed. 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