Platinum supported on highly-dispersed ceria on activated carbon for the total oxidation of VOCs

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Title: Platinum supported on highly-dispersed ceria on activated carbon for the total oxidation of VOCs
Authors: Abdelouahab Reddam, Zinab | El Mail, Rachad | Coloma, Fernando | Sepúlveda-Escribano, Antonio
Research Group/s: Materiales Avanzados
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales | Universidad de Alicante. Servicios Técnicos de Investigación
Keywords: Pt | Ceria | Activated carbon | VOCs | Total combustion
Knowledge Area: Química Inorgánica
Issue Date: 25-Mar-2015
Publisher: Elsevier
Citation: Applied Catalysis A: General. 2015, 494: 87-94. doi:10.1016/j.apcata.2015.01.026
Abstract: Catalysts consisting in platinum supported on cerium oxide highly dispersed on activated carbon, with a Pt loading of 1 wt.% and ceria loadings of 5, 10 and 20 wt.% have been prepared by impregnation method and characterized by several techniques (N2 adsorption at 77 K, ICP, XRD, H2-TPR and XPS). Their catalytic behavior has been evaluated in the total oxidation of ethanol and toluene after reduction at 473 K. The obtained results show that the prepared catalysts have better performances than platinum supported on bulk CeO2. The best catalytic performance was obtained for 10 wt.% ceria loading, likely due to an optimum synergistic interaction between highly dispersed cerium oxide and platinum particles. Pt-10Ce/C achieves total conversion of ethanol and toluene to CO2 at 433 K and 453 K, respectively, and shows no deactivation during a test for 100 h. Under humid conditions (relative humidity, RH, of 40 and 80%), the activity was only slightly influenced due to the hydrophobic character of the activated carbon support, which prevents the adsorption of water.
Sponsor: Financial support from Generalitat Valenciana (Spain, PROMETEO/2009/002-FEDER and PROMETEOII/2014/004) is gratefully acknowledged.
ISSN: 0926-860X (Print) | 1873-3875 (Online)
DOI: 10.1016/j.apcata.2015.01.026
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2015 Elsevier B.V.
Peer Review: si
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