Highly dispersed Ptδ+ on TixCe(1−x)O2 as an active phase in preferential oxidation of CO
Contribuinte(s) |
Universidad de Alicante. Departamento de Química Inorgánica Universidad de Alicante. Instituto Universitario de Materiales Materiales Avanzados |
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Data(s) |
13/09/2016
13/09/2016
01/01/2016
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Resumo |
Structure–activity relationships for 1 wt.% Pt catalysts were investigated for a series of TixCe(1−x)O2 (x = 1, 0.98, 0.9, 0.5, 0.2 and 0) supports prepared by the sol–gel method. The catalysts prepared by impregnation were characterized in detail by applying a wide range of techniques as N2-isotherms, XRF, XRD, Raman, XPS, H2-TPR, Drifts, UV–vis, etc. and tested in the preferential oxidation of CO in the presence of H2. Also several reaction conditions were deeply analyzed. A strong correlation between catalyst performance and the electronic properties let us to propose, based in all the experimental results, a plausible reaction mechanism where several redox cycles are involved. Financial support from Generalitat Valenciana and Ministerio de Economía y Competitividad (Spain) through projects PROME-TEOII/2014/004 and MAT2010-21147 is gratefully acknowledged. EOJ also thanks the CNPq – Brazil for her grant. EVRF gratefully acknowledge the Ministerio de Economía y Competitividad (Spain) for his Ramon y Cajal grant (RYC-2012-11427). |
Identificador |
Applied Catalysis B: Environmental. 2016, 180: 169-178. doi:10.1016/j.apcatb.2015.06.031 0926-3373 (Print) 1873-3883 (Online) http://hdl.handle.net/10045/57836 10.1016/j.apcatb.2015.06.031 |
Idioma(s) |
eng |
Publicador |
Elsevier |
Relação |
http://dx.doi.org/10.1016/j.apcatb.2015.06.031 |
Direitos |
© 2015 Elsevier B.V. info:eu-repo/semantics/embargoedAccess |
Palavras-Chave | #PROX #Ceria #Titania #Platinum #Hydrogen purification #Química Inorgánica |
Tipo |
info:eu-repo/semantics/article |