Deactivation study of Ru-Sn-B/Al 2 O 3 catalysts during selective hydrogenation of methyl oleate to fatty alcohol
In this work, the deactivation of the Ru-Sn-B/Al 2 O 3 catalyst prepared by the incipient wetness method in the selective hydrogenation reaction of methyl oleate to fatty alcohol was studied. There was a decrease in both the activity and selectivity of fatty alcohol during successive reaction experi...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/107971 |
| Acceso en línea: | http://hdl.handle.net/11336/107971 |
| Access Level: | acceso abierto |
| Palabra clave: | DEACTIVATION OLEYL ALCOHOL SELECTIVE HYDROGENATION https://purl.org/becyt/ford/2.4 https://purl.org/becyt/ford/2 |
| Sumario: | In this work, the deactivation of the Ru-Sn-B/Al 2 O 3 catalyst prepared by the incipient wetness method in the selective hydrogenation reaction of methyl oleate to fatty alcohol was studied. There was a decrease in both the activity and selectivity of fatty alcohol during successive reaction experiments. The fresh and deactivated catalysts were evaluated by different techniques such as TPR, XPS, TGA, Raman, and FTIR to determine the deactivation causes. Lower Ru and Sn content were found in the deactivated catalyst due to the loss of the active material during hydrogenation reaction. As the metal loss was more important for Ru than for Sn, the Ru/Sn ratio was changed, leading to a decrease of the selectivity. Moreover, the analysis of the XPS peak by the deconvolution of Sn species suggests the more active (SnO x ) species for selective hydrogenation are more affected than the less selective (SnO y ). Coke deposition was not observed by Raman and FTIR. |
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