TY - JOUR
T1 - Highly dispersed Ptδ+ on TixCe(1-x)O2 as an active phase in preferential oxidation of CO
AU - Rico-Francés, S.
AU - Jardim, E. O.
AU - Wezendonk, T. A.
AU - Kapteijn, F.
AU - Gascon Sabate, Jorge
AU - Sepúlveda-Escribano, A.
AU - Ramos-Fernandez, Enrique V.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - 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.
AB - 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.
KW - Ceria
KW - Hydrogen purification
KW - PROX
KW - Platinum
KW - Titania
UR - http://www.scopus.com/inward/record.url?scp=84934954980&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2015.06.031
DO - 10.1016/j.apcatb.2015.06.031
M3 - Article
AN - SCOPUS:84934954980
VL - 180
SP - 169
EP - 178
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
SN - 0926-3373
ER -