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.
- Hydrogen purification
ASJC Scopus subject areas
- Environmental Science(all)
- Process Chemistry and Technology