Zirconia-supported cobalt catalysts: activity and selectivity in NO reduction by CO

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dc.creatorLima, Thiago de Melo
dc.creatorPereira, Cristiane Alves
dc.creatorNova Castelblanco, William
dc.creatorSantos, Camila Messias Barbosa
dc.creatorSilva, Sebastião William da
dc.creatorSantana, Ricardo Costa de
dc.creatorUrquieta Gonzalez, Ernesto Antonio
dc.creatorSartoratto, Patrícia Pommé Confessori
dc.date.accessioned2024-07-11T14:33:35Z
dc.date.available2024-07-11T14:33:35Z
dc.date.issued2017
dc.description.abstractCobalt 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.citationLIMA, Thiago M. et al. Zirconia-supported cobalt catalysts: activity and selectivity in NO reduction by CO. ChemistrySelect, New York, v. 2, p. 11565-11573, 2017. DOI: 10.1002/slct.201702475. Disponível em: https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/slct.201702475. Acesso em: 25 maio 2023.
dc.identifier.doi10.1002/slct.201702475
dc.identifier.issne- 2365-6549
dc.identifier.urihttps://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/slct.201702475
dc.language.isoeng
dc.publisher.countryEstados unidos
dc.publisher.departmentInstituto de Física - IF (RMG)
dc.rightsAcesso Restrito
dc.titleZirconia-supported cobalt catalysts: activity and selectivity in NO reduction by CO
dc.typeArtigo

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