Influence of hierarchically porous niobium doped TiO2 supports in the total catalytic oxidation of model VOCs over noble metal nanoparticles

J. C. Rooke, T. Barakat, M. Franco Finol, P. Billemont, G. De Weireld, Y. Li, R. Cousin, J. M. Giraudon, S. Siffert, J. F. Lamonier, B. L. Su

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

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.

langue originaleAnglais
Pages (de - à)149-160
Nombre de pages12
journalApplied Catalysis B Environmental
Volume142-143
Les DOIs
étatPublié - 1 oct. 2013

Empreinte digitale

Niobium
niobium
Metal nanoparticles
Catalytic oxidation
Precious metals
Volatile organic compounds
volatile organic compound
Catalyst activity
catalyst
oxidation
Catalysts
metal
Doping (additives)
Catalyst selectivity
anatase
Toluene
Remediation
toluene
Titanium dioxide
Temperature

Citer ceci

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abstract = "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.",
keywords = "Hierarchical porous supports, Niobium doped titania, Noble metal catalysts, VOCs",
author = "Rooke, {J. C.} and T. Barakat and Finol, {M. Franco} and P. Billemont and {De Weireld}, G. and Y. Li and R. Cousin and Giraudon, {J. M.} and S. Siffert and Lamonier, {J. F.} and Su, {B. L.}",
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Influence of hierarchically porous niobium doped TiO2 supports in the total catalytic oxidation of model VOCs over noble metal nanoparticles. / Rooke, J. C.; Barakat, T.; Finol, M. Franco; Billemont, P.; De Weireld, G.; Li, Y.; Cousin, R.; Giraudon, J. M.; Siffert, S.; Lamonier, J. F.; Su, B. L.

Dans: Applied Catalysis B Environmental, Vol 142-143, 01.10.2013, p. 149-160.

Résultats de recherche: Contribution à un journal/une revueArticle

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T1 - Influence of hierarchically porous niobium doped TiO2 supports in the total catalytic oxidation of model VOCs over noble metal nanoparticles

AU - Rooke, J. C.

AU - Barakat, T.

AU - Finol, M. Franco

AU - Billemont, P.

AU - De Weireld, G.

AU - Li, Y.

AU - Cousin, R.

AU - Giraudon, J. M.

AU - Siffert, S.

AU - Lamonier, J. F.

AU - Su, B. L.

PY - 2013/10/1

Y1 - 2013/10/1

N2 - 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.

AB - 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.

KW - Hierarchical porous supports

KW - Niobium doped titania

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