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

S. Rico-Francés, E. O. Jardim, T. A. Wezendonk, F. Kapteijn, Jorge Gascon Sabate, A. Sepúlveda-Escribano, Enrique V. Ramos-Fernandez*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Structure-activity relationships for 1wt.% 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.

Original languageEnglish (US)
Pages (from-to)169-178
Number of pages10
JournalApplied Catalysis B: Environmental
Volume180
DOIs
StatePublished - Jan 1 2016

Keywords

  • Ceria
  • Hydrogen purification
  • PROX
  • Platinum
  • Titania

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

Fingerprint Dive into the research topics of 'Highly dispersed Pt<sup>δ+</sup> on Ti<sub>x</sub>Ce<sub>(1-x)</sub>O<sub>2</sub> as an active phase in preferential oxidation of CO'. Together they form a unique fingerprint.

Cite this