Zirconia-supported cobalt catalysts: activity and selectivity in NO reduction by CO
dc.creator | Lima, Thiago de Melo | |
dc.creator | Pereira, Cristiane Alves | |
dc.creator | Nova Castelblanco, William | |
dc.creator | Silva, Sebastiao William da | |
dc.creator | Santos, Camila Messias Barbosa | |
dc.creator | Santana, Ricardo Costa de | |
dc.creator | Urquieta Gonzalez, Ernesto Antonio | |
dc.creator | Sartoratto, Patrícia Pommé Confessori | |
dc.date.accessioned | 2024-07-22T20:03:25Z | |
dc.date.available | 2024-07-22T20:03:25Z | |
dc.date.issued | 2017-12-13 | |
dc.description.abstract | Cobalt catalysts supported on tetragonal and monoclinic zirconia were prepared using a one-pot procedure through the incorporation of a Co3O4 colloidal suspension during the support synthesis and evaluated in the reaction of NO reduction by CO. A better dispersion of the active phase was obtained by this method when compared to the conventional impregnation one. Furthermore, the crystalline phase of zirconia in the supports had a crucial effect in the dispersion of the cobalt species, being that the pure tetragonal phase led to a higher dispersion of the active phase. The one-pot prepared tetragonal zirconia led to cobalt active species that consisted in well-dispersed small agglomerates of Co3O4 and Co2+ species as oxo-ions which displayed the best catalytic performance among the studied catalysts, with the highest NO conversion (75%) and high selectivity to N2 (85%) at 300 °C. These results show that the one-pot methodology employed in this work has a strong potential to produce suitable catalysts for the abatement of NOx emissions. | |
dc.identifier.citation | LIMA, Thiago M. et al. Zirconia-supported cobalt catalysts: activity and selectivity in NO reduction by CO. ChemistrySelect, Weinheim, v. 2, n. 35, p. 11565-11573, 2017. DOI: 10.1002/slct.201702475. Disponível em: https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/slct.201702475. Acesso em: 5 jul. 2024. | |
dc.identifier.doi | 10.1002/slct.201702475 | |
dc.identifier.issn | e- 2365-6549 | |
dc.identifier.issn | 2365-6549 | |
dc.identifier.uri | https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/slct.201702475 | |
dc.language.iso | eng | |
dc.publisher.country | Alemanha | |
dc.publisher.department | Instituto de Química - IQ (RMG) | |
dc.rights | Acesso Restrito | |
dc.subject | Cobalt oxide | |
dc.subject | Colloidal suspension | |
dc.subject | NO reduction | |
dc.subject | One-pot Zirconia | |
dc.title | Zirconia-supported cobalt catalysts: activity and selectivity in NO reduction by CO | |
dc.type | Artigo |
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