Modified BaMnO<sub>3</sub>-Based Catalysts for Gasoline Particle Filters (GPF): A Preliminary Study
Gasoline engines, mainly gasoline direct injection engines (GDI) require, in addition to three-way catalysts (TWC), a new catalytic system to remove the formed soot. Gasoline Particle Filters (GPF) are, among others, a possible solution. BaMnO<sub>3</sub> and copper-doped BaMnO<sub>...
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MDPI AG
2022-10-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/12/11/1325 |
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| author | Verónica Torregrosa-Rivero María-Salvadora Sánchez-Adsuar María-José Illán-Gómez |
| author_facet | Verónica Torregrosa-Rivero María-Salvadora Sánchez-Adsuar María-José Illán-Gómez |
| author_sort | Verónica Torregrosa-Rivero |
| collection | DOAJ |
| description | Gasoline engines, mainly gasoline direct injection engines (GDI) require, in addition to three-way catalysts (TWC), a new catalytic system to remove the formed soot. Gasoline Particle Filters (GPF) are, among others, a possible solution. BaMnO<sub>3</sub> and copper-doped BaMnO<sub>3</sub> perovskites seem to be a feasible alternative to current catalysts for GPF. The physical and chemical properties of these two perovskites determining the catalytic performance have been modified using different synthesis routes: (i) sol-gel, (ii) modified sol-gel and iii) hydrothermal. The deep characterization allows concluding that: (i) all samples present a perovskite-like structure (hexagonal), except BMC3 which shows a polytype one (due to the distortion caused by copper insertion in the lattice), and ii) when a low calcination temperature is used during synthesis, the sintering effect decreases and the textural properties, the reducibility and the oxygen mobility are improved. The study of soot oxidation simulating the hardest GDI scenarios reveals that, as for diesel soot removal, the best catalytic performance involves the presence of oxygen vacancies to adsorb and activate oxygen and a labile Mn (IV)/Mn (III) redox pair to dissociate the adsorbed oxygen. The combination of both properties allows the transport of the dissociated oxygen towards the soot. |
| first_indexed | 2024-03-09T19:11:53Z |
| format | Article |
| id | doaj.art-05357f1231ee4d17b3585b73d552f48d |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-09T19:11:53Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-05357f1231ee4d17b3585b73d552f48d2023-11-24T04:05:32ZengMDPI AGCatalysts2073-43442022-10-011211132510.3390/catal12111325Modified BaMnO<sub>3</sub>-Based Catalysts for Gasoline Particle Filters (GPF): A Preliminary StudyVerónica Torregrosa-Rivero0María-Salvadora Sánchez-Adsuar1María-José Illán-Gómez2Carbon Materials and Environment Research Group, Department of Inorganic Chemistry, Faculty of Science, University of Alicante San Vicente del Raspeig, 03690 Alicante, SpainCarbon Materials and Environment Research Group, Department of Inorganic Chemistry, Faculty of Science, University of Alicante San Vicente del Raspeig, 03690 Alicante, SpainCarbon Materials and Environment Research Group, Department of Inorganic Chemistry, Faculty of Science, University of Alicante San Vicente del Raspeig, 03690 Alicante, SpainGasoline engines, mainly gasoline direct injection engines (GDI) require, in addition to three-way catalysts (TWC), a new catalytic system to remove the formed soot. Gasoline Particle Filters (GPF) are, among others, a possible solution. BaMnO<sub>3</sub> and copper-doped BaMnO<sub>3</sub> perovskites seem to be a feasible alternative to current catalysts for GPF. The physical and chemical properties of these two perovskites determining the catalytic performance have been modified using different synthesis routes: (i) sol-gel, (ii) modified sol-gel and iii) hydrothermal. The deep characterization allows concluding that: (i) all samples present a perovskite-like structure (hexagonal), except BMC3 which shows a polytype one (due to the distortion caused by copper insertion in the lattice), and ii) when a low calcination temperature is used during synthesis, the sintering effect decreases and the textural properties, the reducibility and the oxygen mobility are improved. The study of soot oxidation simulating the hardest GDI scenarios reveals that, as for diesel soot removal, the best catalytic performance involves the presence of oxygen vacancies to adsorb and activate oxygen and a labile Mn (IV)/Mn (III) redox pair to dissociate the adsorbed oxygen. The combination of both properties allows the transport of the dissociated oxygen towards the soot.https://www.mdpi.com/2073-4344/12/11/1325perovskitecarbon blackGPFsoot oxidation |
| spellingShingle | Verónica Torregrosa-Rivero María-Salvadora Sánchez-Adsuar María-José Illán-Gómez Modified BaMnO<sub>3</sub>-Based Catalysts for Gasoline Particle Filters (GPF): A Preliminary Study Catalysts perovskite carbon black GPF soot oxidation |
| title | Modified BaMnO<sub>3</sub>-Based Catalysts for Gasoline Particle Filters (GPF): A Preliminary Study |
| title_full | Modified BaMnO<sub>3</sub>-Based Catalysts for Gasoline Particle Filters (GPF): A Preliminary Study |
| title_fullStr | Modified BaMnO<sub>3</sub>-Based Catalysts for Gasoline Particle Filters (GPF): A Preliminary Study |
| title_full_unstemmed | Modified BaMnO<sub>3</sub>-Based Catalysts for Gasoline Particle Filters (GPF): A Preliminary Study |
| title_short | Modified BaMnO<sub>3</sub>-Based Catalysts for Gasoline Particle Filters (GPF): A Preliminary Study |
| title_sort | modified bamno sub 3 sub based catalysts for gasoline particle filters gpf a preliminary study |
| topic | perovskite carbon black GPF soot oxidation |
| url | https://www.mdpi.com/2073-4344/12/11/1325 |
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