Improving the Performance of BaMnO3 Perovskite as Soot Oxidation Catalyst Using Carbon Black during Sol-Gel Synthesis
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Título: | Improving the Performance of BaMnO3 Perovskite as Soot Oxidation Catalyst Using Carbon Black during Sol-Gel Synthesis |
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Autor/es: | Torregrosa-Rivero, Verónica | Sánchez-Adsuar, María Salvadora | Illán-Gómez, María José |
Grupo/s de investigación o GITE: | Materiales Carbonosos y Medio Ambiente |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica |
Palabras clave: | BaMnO3 perovskite | Diesel soot oxidation | Sol-gel synthesis | Carbon black |
Área/s de conocimiento: | Química Inorgánica |
Fecha de publicación: | 10-ene-2022 |
Editor: | MDPI |
Cita bibliográfica: | Torregrosa-Rivero V, Sánchez-Adsuar M-S, Illán-Gómez M-J. Improving the Performance of BaMnO3 Perovskite as Soot Oxidation Catalyst Using Carbon Black during Sol-Gel Synthesis. Nanomaterials. 2022; 12(2):219. https://doi.org/10.3390/nano12020219 |
Resumen: | A series of BaMnO3 solids (BM-CX) were prepared by a modified sol-gel method in which a carbon black (VULCAN XC-72R), and different calcination temperatures (600–850 °C) were used. The fresh and used catalysts were characterized by ICP-OES, XRD, XPS, FESEM, TEM, O2-TPD and H2- TPR-. The characterization results indicate that the use of low calcination temperatures in the presence of carbon black allows decreasing the sintering effects and achieving some improvements regarding BM reference catalyst: (i) smaller average crystal and particles size, (ii) a slight increase in the BET surface area, (iii) a decrease in the macropores diameter range and, (iv) a lower temperature for the reduction of manganese. The hydrogen consumption confirms Mn(III) and Mn(IV) are presented in the samples, Mn(III) being the main oxidation state. The BM-CX catalysts series shows an improved catalytic performance regarding BM reference catalyst for oxidation processes (NO to NO2 and NO2-assisted soot oxidation), promoting higher stability and higher CO2 selectivity. BM-C700 shows the best catalytic performance, i.e., the highest thermal stability and a high initial soot oxidation rate, which decreases the accumulation of soot during the soot oxidation and, consequently, minimizes the catalyst deactivation. |
Patrocinador/es: | This research was funded by the Generalitat Valenciana (PROMETEO/2018/076), Spanish Government (PID2019-105542RB-I00) and the EU (FEDER Founding). |
URI: | http://hdl.handle.net/10045/120908 |
ISSN: | 2079-4991 |
DOI: | 10.3390/nano12020219 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.3390/nano12020219 |
Aparece en las colecciones: | INV - MCMA - Artículos de Revistas |
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