Titre:	Cerium–zirconium mixed oxide nanostructures for diesel soot oxidation : synthesis and effect of structure
Auteur(s):	Campos, Pablo Teles Aragão Lima, João Pedro Vieira Silva, Daniele Renata de Queiroz Oliveira, Claudinei Fabiano de Dias, Sílvia Cláudia Loureiro Dias, José Alves
metadata.dc.identifier.orcid:	https://orcid.org/0000-0002-3351-9226 https://orcid.org/0000-0003-0042-0091
Assunto::	Nanoestruturas Óxido de zinco Óxido de cério
Date de publication:	2020
Editeur:	Royal Society of Chemistry
Référence bibliographique:	CAMPOS, Pablo Teles Aragão et al. Cerium–zirconium mixed oxide nanostructures for diesel soot oxidation: synthesis and effect of structure. RSC Advances, v. 10, p. 27428-27438, 2020. DOI: https://doi.org/10.1039/D0RA05130F. Disponível em: https://pubs.rsc.org/en/content/articlelanding/2020/ra/d0ra05130f. Acesso em: 12 abr. 2022.
Abstract:	Nanostructured materials have been used in several branches of science and technology. Particulate matter is one of the major air pollution concerns. In this work, nanorods and nanoparticles of Ce0.8Zr0.2O2 (CZ) mixed oxides were prepared by different routes, and the use of an organic template was evaluated in diesel soot oxidation. The catalysts were characterized by several techniques including structural analysis (XRD, TEM, N2 adsorption–desorption) and activity (TPR/MS, TPO/MS). A fast TPR/MS method is proposed to calculate hydrogen consumption that can be correlated to the oxygen storage capacity (OSC). It was demonstrated that CZ-nanorods with twice the amount of template in the syntheses (CZ-NRs-2X) were very active for soot oxidation with T50% at 351 °C, and CO2 and H2O were the only oxidation products from Printex®-U (Evonik). This catalyst, reported for the first time, was subjected to up to three cycles and it showed fair activity, proving that this morphology is one of the best mixed oxides of CZ for oxidation.
metadata.dc.description.unidade:	Instituto de Química (IQ)
Licença::	(CC BY)
DOI:	https://doi.org/10.1039/D0RA05130F
Collection(s) :	Artigos publicados em periódicos e afins

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