Simultaneous catalytic oxidation of carbon monoxide, hydrocarbons and soot with Ce–Zr–Nd mixed oxides in simulated diesel exhaust conditions
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Campo DC | Valor | Idioma |
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dc.contributor | Materiales Carbonosos y Medio Ambiente | es |
dc.contributor.author | Xavier, Leandro P. dos Santos | - |
dc.contributor.author | Rico Pérez, Verónica | - |
dc.contributor.author | Hernández Giménez, Ana M. | - |
dc.contributor.author | Lozano-Castello, Dolores | - |
dc.contributor.author | Bueno López, Agustín | - |
dc.contributor.other | Universidad de Alicante. Departamento de Química Inorgánica | es |
dc.contributor.other | Universidad de Alicante. Instituto Universitario de Materiales | es |
dc.date.accessioned | 2014-10-01T11:11:40Z | - |
dc.date.available | 2014-10-01T11:11:40Z | - |
dc.date.issued | 2015-01 | - |
dc.identifier.citation | Applied Catalysis B: Environmental. 2015, 162: 412-419. doi:10.1016/j.apcatb.2014.07.013 | es |
dc.identifier.issn | 0926-3373 (Print) | - |
dc.identifier.issn | 1873-3883 (Online) | - |
dc.identifier.uri | http://hdl.handle.net/10045/40799 | - |
dc.description.abstract | Ce0.73−xZr0.27NdxO2 mixed oxides (x ≤ 0.3) were prepared, characterized by XRD, Raman spectroscopy, N2 adsorption isotherms and H2-TPR, and tested for simultaneous CO, propylene, benzene and soot oxidation in a gas mixture containing O2, NOx, H2O, CO2, CO, propylene (model aliphatic hydrocarbon) and benzene (model aromatic hydrocarbon) that simulates a diesel exhaust. Ce–Zr mixed oxide doping with a low atomic fraction of neodymium (0.01 ≤ x ≤ 0.09) promotes the creation of oxygen vacancies, has a minor effect in the BET specific surface areas of the oxides, increases the surface ceria reducibility and has a positive effect in the catalytic activity. On the contrary, higher neodymium atomic fractions (x = 0.2 and 0.3) promote sintering, with a drastic decrease of the BET specific surface area, surface reducibility and catalytic activity. The Ce0.73−xZr0.27NdxO2 catalysts with x ≤ 0.09 are able to accelerate simultaneously soot, propylene and benzene combustion, and as a general trend, the catalytic behavior of Ce0.73Zr0.27O2 is improved by low atomic fraction neodymium doping (0.01 ≤ x ≤ 0.09). These Ce0.73−xZr0.27NdxO2 mixed oxides with 0.01 ≤ x ≤ 0.09 are also able to accelerate CO oxidation in a certain extent, but there is a net production of CO during soot combustion because the oxidation capacity of these oxides is not high enough to oxidize all CO released as soot combustion product. | es |
dc.description.sponsorship | The authors thank the financial support of CNPq – National Counsel of Technological and Scientific Development (Brazil), of the Spanish Ministry of Economy and Competitiveness (ProjectCTQ2012-30703) and of the UE (FEDER funding). | es |
dc.language | eng | es |
dc.publisher | Elsevier | es |
dc.subject | Diesel soot | es |
dc.subject | Carbon monoxide | es |
dc.subject | Hydrocarbons | es |
dc.subject | Ceria–zirconia catalyst | es |
dc.subject | Neodymium–ceria catalyst | es |
dc.subject.other | Química Inorgánica | es |
dc.title | Simultaneous catalytic oxidation of carbon monoxide, hydrocarbons and soot with Ce–Zr–Nd mixed oxides in simulated diesel exhaust conditions | es |
dc.type | info:eu-repo/semantics/article | es |
dc.peerreviewed | si | es |
dc.identifier.doi | 10.1016/j.apcatb.2014.07.013 | - |
dc.relation.publisherversion | http://dx.doi.org/10.1016/j.apcatb.2014.07.013 | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.relation.projectID | info:eu-repo/grantAgreement/MINECO//CTQ2012-30703 | - |
Aparece en las colecciones: | INV - MCMA - Artículos de Revistas |
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2015_Xavier_etal_ACB-E_final.pdf | Versión final (acceso restringido) | 1,43 MB | Adobe PDF | Abrir Solicitar una copia |
2015_Xavier_etal_ACB-E.pdf | Accepted Manuscript (acceso abierto) | 1,93 MB | Adobe PDF | Abrir Vista previa |
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