Autor segons l'article: Urbina, Claudia; Campos, Cristian; Pecchi, Gina; Claver, Carmen; Reyes, Patricio
Departament: Química Física i Inorgànica
Autor/s de la URV: Claver Cabrero, Maria del Carmen Orosia
Paraules clau: Zirconium oxide Zirconium Stereoisomerism Platinum Particle size Mesostructured zro 2 Hydrogenation Enantioselective hydrogenation Colloids Colloidal platinum Chiral modifier Chalcones Catalysis 1-phenyl-1,2-propanedione
Resum: The enantioselective hydrogenation of 1-phenyl-1,2-propanedione over Pt colloids stabilized with (R,S)-4,5-dihydro-4,5-diphenyl-2-(6-cyanopyridinyl)imidazoline (CI) supported on a meso-structured ZrO2 under a pressure of 40 bar of H-2 at 298 K has been investigated. The metal loading in all catalysts was 1 wt%. The effect of the amount of chiral modifier on the metal particle size and on the catalytic behavior was analyzed. It was found that as the CI/Pt molar ratio increases from 2.5 to 3.5 the Pt crystal size decreases from 3.0 to 1.8 nm. All catalysts were very active in the studied reaction, with the most active one being the catalyst with smaller Pt particles, whereas the selectivity is higher in those catalysts with larger chiral modified Pt metal particles.
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Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 1420-3049
Adreça de correu electrònic de l'autor: carmen.claver@urv.cat
Identificador de l'autor: 0000-0002-2518-7401
Data d'alta del registre: 2025-02-08
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Molecules. 15 (5): 3428-40
Referència de l'ítem segons les normes APA: Urbina, Claudia; Campos, Cristian; Pecchi, Gina; Claver, Carmen; Reyes, Patricio (2010). Chiral Pt/ZrO2 catalysts. Enantioselective hydrogenation of 1-phenyl-1,2-propanedione. Molecules, 15(5), 3428-40. DOI: 10.3390/molecules15053428
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2010
Tipus de publicació: Journal Publications
Repositori URV