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Cerium–zirconium mixed oxide nanostructures for diesel soot oxidation: synthesis and effect of structure
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 Ce(0.8)Zr(0.2)O(2) (CZ) mixed oxides were prepared by different routes, and the use of an organic template...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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The Royal Society of Chemistry
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9055676/ https://www.ncbi.nlm.nih.gov/pubmed/35516927 http://dx.doi.org/10.1039/d0ra05130f |
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author | Teles Aragão Campos, Pablo Vieira Lima, João Pedro de Queiroz Silva, Daniele Renata Oliveira, Claudinei Fabiano Dias, Sílvia Cláudia Loureiro Dias, José Alves |
author_facet | Teles Aragão Campos, Pablo Vieira Lima, João Pedro de Queiroz Silva, Daniele Renata Oliveira, Claudinei Fabiano Dias, Sílvia Cláudia Loureiro Dias, José Alves |
author_sort | Teles Aragão Campos, Pablo |
collection | PubMed |
description | 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 Ce(0.8)Zr(0.2)O(2) (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, N(2) 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 T(50%) at 351 °C, and CO(2) and H(2)O 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. |
format | Online Article Text |
id | pubmed-9055676 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90556762022-05-04 Cerium–zirconium mixed oxide nanostructures for diesel soot oxidation: synthesis and effect of structure Teles Aragão Campos, Pablo Vieira Lima, João Pedro de Queiroz Silva, Daniele Renata Oliveira, Claudinei Fabiano Dias, Sílvia Cláudia Loureiro Dias, José Alves RSC Adv Chemistry 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 Ce(0.8)Zr(0.2)O(2) (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, N(2) 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 T(50%) at 351 °C, and CO(2) and H(2)O 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. The Royal Society of Chemistry 2020-07-23 /pmc/articles/PMC9055676/ /pubmed/35516927 http://dx.doi.org/10.1039/d0ra05130f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Teles Aragão Campos, Pablo Vieira Lima, João Pedro de Queiroz Silva, Daniele Renata Oliveira, Claudinei Fabiano Dias, Sílvia Cláudia Loureiro Dias, José Alves Cerium–zirconium mixed oxide nanostructures for diesel soot oxidation: synthesis and effect of structure |
title | Cerium–zirconium mixed oxide nanostructures for diesel soot oxidation: synthesis and effect of structure |
title_full | Cerium–zirconium mixed oxide nanostructures for diesel soot oxidation: synthesis and effect of structure |
title_fullStr | Cerium–zirconium mixed oxide nanostructures for diesel soot oxidation: synthesis and effect of structure |
title_full_unstemmed | Cerium–zirconium mixed oxide nanostructures for diesel soot oxidation: synthesis and effect of structure |
title_short | Cerium–zirconium mixed oxide nanostructures for diesel soot oxidation: synthesis and effect of structure |
title_sort | cerium–zirconium mixed oxide nanostructures for diesel soot oxidation: synthesis and effect of structure |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9055676/ https://www.ncbi.nlm.nih.gov/pubmed/35516927 http://dx.doi.org/10.1039/d0ra05130f |
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