Reduced alkaline earth metal (Ca, Sr) substituted LaCoO<sub>3</sub> catalysts for succinic acid conversion
| dc.contributor.author | Rojas, Mabel | |
| dc.contributor.author | Bernales, Gabriel | |
| dc.contributor.author | Dongil, Ana Belen | |
| dc.contributor.author | Pecchi, Gina | |
| dc.contributor.author | Escalona, Nestor | |
| dc.date.accessioned | 2025-01-20T21:01:41Z | |
| dc.date.available | 2025-01-20T21:01:41Z | |
| dc.date.issued | 2022 | |
| dc.description.abstract | The effect of partial substitution of La by Ca and Sr in the catalytic activity of lanthanum cobaltite (LaCoO3) was studied. Two series of La1-xCaxCoO3 and La1-xSrxCoO3 (x = 0, 0.2, and 0.4) reduced perovskites were prepared, characterized and evaluated in the succinic acid conversion at 200 degrees C and 6 MPa. The characterization results showed a larger Ca substitution in the La1-xCaxCoO3 series, whereas carbonates as segregated phases up to x = 0.2 of Sr were obtained in the La1-xSrxCoO3 series. In the Sr substituted perovskites, the oxidation of Co3+ to Co4+ neutralizes the electronic instability, whereas in the Ca substituted perovskites the presence of Ca2+ generates oxygen vacancies. The succinic acid conversion forms mainly succinic anhydride and 2-hydroxy-tetrahydrofuran by dehydration and hydrogenation processes. The highest initial rate of the reduced LaCoO3 was attributed to the smallest Co crystal size with no segregated phases, compared to substituted catalysts. | |
| dc.fuente.origen | WOS | |
| dc.identifier.doi | 10.1039/d2nj03714a | |
| dc.identifier.eissn | 1369-9261 | |
| dc.identifier.issn | 1144-0546 | |
| dc.identifier.uri | https://doi.org/10.1039/d2nj03714a | |
| dc.identifier.uri | https://repositorio.uc.cl/handle/11534/92937 | |
| dc.identifier.wosid | WOS:000874156300001 | |
| dc.issue.numero | 44 | |
| dc.language.iso | en | |
| dc.pagina.final | 21189 | |
| dc.pagina.inicio | 21181 | |
| dc.revista | New journal of chemistry | |
| dc.rights | acceso restringido | |
| dc.subject.ods | 12 Responsible Consumption and Production | |
| dc.subject.odspa | 12 Producción y consumo responsable | |
| dc.title | Reduced alkaline earth metal (Ca, Sr) substituted LaCoO<sub>3</sub> catalysts for succinic acid conversion | |
| dc.type | artículo | |
| dc.volumen | 46 | |
| sipa.index | WOS | |
| sipa.trazabilidad | WOS;2025-01-12 |