Highly dispersed Pt on TixCe(1-x)O2 as an active phase in preferential oxidation of CO.

by S. Rico-Francés, E.O. Jardim, T.A. Wezendonk, F. Kapteijn, J. Gascon, A. Sepúlveda-Escribano, E.V. Ramos-Fernández
Year: 2016 ISSN: DOI: 10.1016/j.apcatb.2015.06.031

Bibliography

S. Rico-Francés, E.O. Jardim, T.A. Wezendonk, F. Kapteijn, J. Gascon, A. Sepúlveda-Escribano, E.V. Ramos-Fernández, Appl. Catal. B Environ. 180 (2016) 169-178, Highly dispersed Pt on TixCe(1-x)O2 as an active phase in preferential oxidation of CO

Abstract

​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.

Keywords

PROX Ceria Titania Platinum Hydrogen purification