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- Title
Effect Ofmesoporous Supports on Gold Nanoparticles Activity in Toluene Oxidation.
- Authors
Bailiche, Z.; Berrichi, A.; Bachir, R.
- Abstract
Gold nanoparticles supported over mesoporous ceria (Au/CeO2), titania (Au/TiO2) and iron oxide (Au/Fe2O3) were prepared by deposition-precipitation with urea and used for toluene oxidation. The mesoporous CeO2, Fe2O3, andTiO2 were synthesized employing a hard-template approach using SBA-15 as the template. The catalysts were characterized by BET, X-ray diffraction (XRD), H2-temperature programmed reduction (H2-TPR), diffuse reflectance UV-Vis spectroscopy (DR/UV-Vis), and high-resolution transmission electron microscopy (HRTEM). Based on the temperature required to achieve 50% toluene conversion in the oxidation reaction (T50%), the activity sequence was Au/CeO2 > Au/Fe2O3 > Au/TiO2. The Au/CeO2 catalyst was the most active catalyst, achieving 50% toluene conversion at 240°C and full toluene conversion at 295°C demonstrating high stability over successive catalytic runs.
- Subjects
GOLD nanoparticles; TOLUENE; TRANSMISSION electron microscopy; OXIDATION; REFLECTANCE spectroscopy; ULTRAVIOLET-visible spectroscopy
- Publication
Kinetics & Catalysis, 2024, Vol 65, Issue 2, p178
- ISSN
0023-1584
- Publication type
Article
- DOI
10.1134/S0023158423600967