In Situ DRIFTS Analysis during Hydrogenation of 1-Pentyne and Olefin Purification with Ag Nano Particles
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Título: | In Situ DRIFTS Analysis during Hydrogenation of 1-Pentyne and Olefin Purification with Ag Nano Particles |
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Autor/es: | Cordoba, Misael | García, Lina | Badano, Juan M. | Betti, Carolina P. | Coloma, Fernando | Quiroga, Mónica E. | Lederhos, Cecilia R. |
Grupo/s de investigación o GITE: | Materiales Avanzados |
Centro, Departamento o Servicio: | Universidad de Alicante. Servicios Técnicos de Investigación |
Palabras clave: | In situ DRIFTS | Alkynes | Alkyne/Alkene | Selectivity | Silver | Supports |
Fecha de publicación: | 25-sep-2023 |
Editor: | Wiley-VCH GmbH |
Cita bibliográfica: | ChemPlusChem. 2023. https://doi.org/10.1002/cplu.202300344 |
Resumen: | The catalytic performance of nanoparticles (NPs) of Ag anchored on different supports was evaluated during the selective hydrogenation of 1-pentyne and the purification of a mixture of 1-pentene/1-pentyne (70/30 vol %). The catalysts were identified: Ag/Al (Ag supported on ɣ-Al2O3), Ag/Al-Mg (Ag supported on ɣ-Al2O3 modified with Mg), Ag/Ca (Ag supported on CaCO3) and Ag/RX3 (Ag supported on activated carbon-type: RX3). Besides, in situ DRIFTS analysis of 1-pentyne adsorption on each supports, catalysts and 1-pentyne hydrogenation were investigated. The results showed that the synthesized catalysts were active and very selective (≥85%) for obtaining the desired product (1-pentene). Different adsorbed species (-CºC- and -C=C-) were observed on the supports and catalysts surface using in situ DRIFT analysis, which can be correlated to the activity and high selectivity reached. The role of the supports and electronic properties over Ag improve to H2 dissociative chemisorption during the hydrogenation reactions; promoting the selectivity and the high catalytic performance. Ag/Al and Ag/Al-Mg were the most active catalysts. This was due to the synergism between the active Ag°/Ag+ species and the supports (electronic effects). The results show that Ag/Al and Ag/Al-Mg catalysts have favorable properties and are promising for the alkyne hydrogenation and olefin purification reactions. |
URI: | http://hdl.handle.net/10045/137582 |
ISSN: | 2192-6506 |
DOI: | 10.1002/cplu.202300344 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2023 Wiley-VCH GmbH |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1002/cplu.202300344 |
Aparece en las colecciones: | INV - LMA - Artículos de Revistas |
Archivos en este ítem:
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Cordoba-Arroyo_etal_2023_ChemPlusChem_accepted.pdf | Embargo 12 meses (acceso abierto: 26 sept. 2024) | 3,25 MB | Adobe PDF | Abrir Solicitar una copia |
Cordoba-Arroyo_etal_2023_ChemPlusChem_final.pdf | Versión final (acceso restringido) | 7,84 MB | Adobe PDF | Abrir Solicitar una copia |
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