Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
52870 | Catalysis Communications | 2007 | 5 Pages |
Abstract
TiO2 and La-doped TiO2 samples with La loading between 0.2% and 2% have been prepared, characterised, and tested in the catalytic oxidation of soot by O2. La doping prevents anatase to rutile phase transformation and crystallite size growth when heated at 800 °C, as deduced from XRD, Raman spectroscopy and BET surface area measurements. The optimum La loading was found to be 0.2%. The catalytic activity of TiO2 and La-doped TiO2 samples tested mainly depends on crystallite size, the lower the size the better the activity. TiO2 phase composition is not a key factor in the catalytic oxidation of soot.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
I. Atribak, I. Such-Basáñez, A. Bueno-López, A. García García,