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Catalytic activity of La-modified TiO2 for soot oxidation by O2

Paper ID Volume ID Publish Year Pages File Format Full-Text
52870 46890 2007 5 PDF Available
Title
Catalytic activity of La-modified TiO2 for soot oxidation by O2
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.

Keywords
Catalysed soot oxidation; Titania; Lanthanum; Diesel pollution control; Soot
First Page Preview
Catalytic activity of La-modified TiO2 for soot oxidation by O2
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 3, March 2007, Pages 478–482
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis