Cargando…
Improving the Performance of BaMnO(3) Perovskite as Soot Oxidation Catalyst Using Carbon Black during Sol-Gel Synthesis
A series of BaMnO(3) 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, O(2-)TPD and H(2-) TPR-. The charac...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8781672/ https://www.ncbi.nlm.nih.gov/pubmed/35055237 http://dx.doi.org/10.3390/nano12020219 |
_version_ | 1784638134861955072 |
---|---|
author | Torregrosa-Rivero, Verónica Sánchez-Adsuar, María-Salvadora Illán-Gómez, María-José |
author_facet | Torregrosa-Rivero, Verónica Sánchez-Adsuar, María-Salvadora Illán-Gómez, María-José |
author_sort | Torregrosa-Rivero, Verónica |
collection | PubMed |
description | A series of BaMnO(3) 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, O(2-)TPD and H(2-) 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 NO(2) and NO(2)-assisted soot oxidation), promoting higher stability and higher CO(2) 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. |
format | Online Article Text |
id | pubmed-8781672 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-87816722022-01-22 Improving the Performance of BaMnO(3) Perovskite as Soot Oxidation Catalyst Using Carbon Black during Sol-Gel Synthesis Torregrosa-Rivero, Verónica Sánchez-Adsuar, María-Salvadora Illán-Gómez, María-José Nanomaterials (Basel) Article A series of BaMnO(3) 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, O(2-)TPD and H(2-) 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 NO(2) and NO(2)-assisted soot oxidation), promoting higher stability and higher CO(2) 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. MDPI 2022-01-10 /pmc/articles/PMC8781672/ /pubmed/35055237 http://dx.doi.org/10.3390/nano12020219 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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/). |
spellingShingle | Article Torregrosa-Rivero, Verónica Sánchez-Adsuar, María-Salvadora Illán-Gómez, María-José Improving the Performance of BaMnO(3) Perovskite as Soot Oxidation Catalyst Using Carbon Black during Sol-Gel Synthesis |
title | Improving the Performance of BaMnO(3) Perovskite as Soot Oxidation Catalyst Using Carbon Black during Sol-Gel Synthesis |
title_full | Improving the Performance of BaMnO(3) Perovskite as Soot Oxidation Catalyst Using Carbon Black during Sol-Gel Synthesis |
title_fullStr | Improving the Performance of BaMnO(3) Perovskite as Soot Oxidation Catalyst Using Carbon Black during Sol-Gel Synthesis |
title_full_unstemmed | Improving the Performance of BaMnO(3) Perovskite as Soot Oxidation Catalyst Using Carbon Black during Sol-Gel Synthesis |
title_short | Improving the Performance of BaMnO(3) Perovskite as Soot Oxidation Catalyst Using Carbon Black during Sol-Gel Synthesis |
title_sort | improving the performance of bamno(3) perovskite as soot oxidation catalyst using carbon black during sol-gel synthesis |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8781672/ https://www.ncbi.nlm.nih.gov/pubmed/35055237 http://dx.doi.org/10.3390/nano12020219 |
work_keys_str_mv | AT torregrosariveroveronica improvingtheperformanceofbamno3perovskiteassootoxidationcatalystusingcarbonblackduringsolgelsynthesis AT sanchezadsuarmariasalvadora improvingtheperformanceofbamno3perovskiteassootoxidationcatalystusingcarbonblackduringsolgelsynthesis AT illangomezmariajose improvingtheperformanceofbamno3perovskiteassootoxidationcatalystusingcarbonblackduringsolgelsynthesis |