Influence of hierarchically porous niobium doped TiO2 supports in the total catalytic oxidation of model VOCs over noble metal nanoparticles
| Autor: | Joanna C. Rooke, G. De Weireld, Jean-François Lamonier, M.D. Franco Finol, Bao-Lian Su, Pierre Billemont, Stéphane Siffert, Jean-Marc Giraudon, Tarek Barakat, Yu Li, Renaud Cousin |
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| Přispěvatelé: | Université de Namur [Namur] (UNamur), Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), Université du Littoral Côte d'Opale (ULCO), Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, University of Mons [Belgium] (UMONS), Université de Mons (UMons), Wuhan University of Science and Technology, Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Anatase
Materials science Inorganic chemistry Niobium chemistry.chemical_element Nanoparticle 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Catalysis Noble metal catalysts chemistry.chemical_compound [CHIM]Chemical Sciences ComputingMilieux_MISCELLANEOUS General Environmental Science Dopant Process Chemistry and Technology VOCs 021001 nanoscience & nanotechnology Toluene 0104 chemical sciences chemistry Catalytic oxidation Hierarchical porous supports Niobium doped titania engineering Noble metal 0210 nano-technology |
| Zdroj: | Applied Catalysis B: Environmental Applied Catalysis B: Environmental, Elsevier, 2013, 142-143, pp.149-160. ⟨10.1016/j.apcatb.2013.05.009⟩ Applied Catalysis B: Environmental, 2013, 142-143, pp.149-160. ⟨10.1016/j.apcatb.2013.05.009⟩ |
| ISSN: | 0926-3373 |
| DOI: | 10.1016/j.apcatb.2013.05.009⟩ |
| Popis: | An Nb doped, hierarchically micro(meso)macroporous TiO2 (anatase phase) was synthesised via a facile self-formation procedure and employed as a catalytic support, combining the advantages of a promoter with improved diffusion through the intrinsic macroporous network. The efficiency of the catalytic systems in the total oxidation of butan-1-ol and toluene was determined. Niobium was found to promote catalytic activity, with minimal secondary products. Indications suggest that reduction of the catalyst occurs at lower temperatures with an Nb dopant owing to stronger support-metal interactions, which boosts efficiency. This study found that noble metals, Pd and Pt, behave differently when deposited on Nb-TiO2 with Pt benefiting most from Nb doping, with a marked increase in activity and CO2 selectivity whereas Pd catalysts have improved low temperature activities. This work highlights the feasibility of economic and energetic reductions by minimising catalyst loading in favour of cheaper catalytic promoters and a reduction in operational temperature during VOC remediation. |
| Databáze: | OpenAIRE |
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