TY - JOUR
T1 - Physicochemical characterization and catalytic properties of titania gel doped with lithium and rubidium
AU - Zamora, M.
AU - López, T.
AU - Gómez, R.
AU - Asomoza, M.
AU - García-Ruiz, A.
AU - Bokhimi, X.
PY - 2004/12
Y1 - 2004/12
N2 - The effect on titania of doping with lithium and rubidium titania gels has been studied in samples prepared with titanium (IV) tetra-n-butoxide co-gelling with the alkaline metal precursors. Titania and doped titania were characterized by X-Ray diffraction, which showed that the catalysts were nanostructured. In samples calcined at 400°C, the crystallite size of the anatase phase was 17 and 14 nm, and 78 and 38 nm for samples calcined at 600°C, for Li/TiO 2 and Rb/TiO 2, respectively. The specific surface areas of doped samples (400°C) are lower in Li/TiO 2 (90 m 2/g) than in Rb/TiO 2(125 m 2/g). Evaluation of their basic properties has been carried out in the acetone condensation reaction. It was found that the activity strongly depended on the Li and Rb ionic radii.
AB - The effect on titania of doping with lithium and rubidium titania gels has been studied in samples prepared with titanium (IV) tetra-n-butoxide co-gelling with the alkaline metal precursors. Titania and doped titania were characterized by X-Ray diffraction, which showed that the catalysts were nanostructured. In samples calcined at 400°C, the crystallite size of the anatase phase was 17 and 14 nm, and 78 and 38 nm for samples calcined at 600°C, for Li/TiO 2 and Rb/TiO 2, respectively. The specific surface areas of doped samples (400°C) are lower in Li/TiO 2 (90 m 2/g) than in Rb/TiO 2(125 m 2/g). Evaluation of their basic properties has been carried out in the acetone condensation reaction. It was found that the activity strongly depended on the Li and Rb ionic radii.
KW - Acetone condensation
KW - Sol-gel doped titania
KW - Titania-doped XRD
KW - Titania-rubidium
UR - http://www.scopus.com/inward/record.url?scp=17744366820&partnerID=8YFLogxK
U2 - 10.1007/s10971-004-5813-5
DO - 10.1007/s10971-004-5813-5
M3 - Artículo
AN - SCOPUS:17744366820
SN - 0928-0707
VL - 32
SP - 339
EP - 343
JO - Journal of Sol-Gel Science and Technology
JF - Journal of Sol-Gel Science and Technology
IS - 1-3
ER -