Behavior of different soot combustion catalysts under NOx/O2. Importance of the catalyst–soot contact

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Title: Behavior of different soot combustion catalysts under NOx/O2. Importance of the catalyst–soot contact
Authors: Guillén Hurtado, Noelia | López Suárez, Franz Edwin | Bueno López, Agustín | Garcia-Garcia, Avelina
Research Group/s: Materiales Carbonosos y Medio Ambiente
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Soot combustion | NOx + O2 | Ce0.8Zr0.2O2 | PrO2−x | SrTiCuO3 | Pt-catalyst
Knowledge Area: Química Inorgánica
Issue Date: Feb-2014
Publisher: Springer Netherlands
Citation: Reaction Kinetics, Mechanisms and Catalysis. 2014, 111(1): 167-182. doi:10.1007/s11144-013-0644-4
Abstract: Four different catalysts (Pt/Al2O3, Ce0.8Zr0.2O2, PrO2−x and SrTiCuO3) have been investigated on a laboratory scale to evaluate their potential as diesel soot combustion catalysts under different experimental conditions, which simulate the situation found in a continuous regeneration technology trap (dual-bed configuration of catalyst and soot) or a catalyst-coated filter system (single-bed configuration, both catalyst and soot particles mixed under loose-contact mode). Under dual-bed configuration, the behavior of the catalysts towards soot combustion are very similar, despite the differences observed in the NO2 production profiles. However, under single-bed configuration, there are important differences in the soot combustion activities and in the NO2 slip profiles. The configurations chosen have an enormous impact on CO/(CO + CO2) ratios of combustion products as well. The most active catalyst under NOx + O2 is PrO2−x combining a high contribution of active oxygen-assisted soot combustion as well as high NO2 production activity along the catalytic bed.
Sponsor: Financial support of Generalitat Valenciana (Prometeo/2009/047 project) and the Spanish Ministry of Science and Innovation (project CTQ2012-30703, which is co-funded by FEDER resources). N. G. H. wishes to thank Generalitat Valenciana her Ph.D. grant within VAL i+d Program.
ISSN: 1878-5190 (Print) | 1878-5204 (Online)
DOI: 10.1007/s11144-013-0644-4
Language: eng
Type: info:eu-repo/semantics/article
Rights: © Akadémiai Kiadó, Budapest, Hungary 2013
Peer Review: si
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Appears in Collections:INV - MCMA - Artículos de Revistas

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