Author, as appears in the article.: Quintero-Arroyo, Gabriela; Rueda, Angie C; Granados-Reyes, Judith; Fals, Jayson; Cesteros, Yolanda
Department: Química Física i Inorgànica
e-ISSN: 2073-4344
URV's Author/s: Cesteros Fernández, Yolanda
Keywords: Bio-oil Biomass C Cyclohexan Fluorination Green Guaiacol hydrodeoxygenation Microwaves Model Ni catalysts Sites Zeolites
Abstract: Commercial NH4-Beta and Na-ZSM-5 zeolites were fluorinated with different amounts of NH4F and using different procedures (room temperature, conventional refluxing, microwave refluxing). Samples were characterized by XRD, N2 physisorption, FTIR, 1H NMR, SEM-EDS, and TGA of adsorbed cyclohexylamine. An increase in the concentration of NH4F led to fluorinated zeolites with higher surface areas and slightly lower amounts of Br & oslash;nsted acid sites due to some dealumination. Fluorination by conventional or microwave refluxing at shorter times did not dealuminate ZSM-5, resulting in the formation of higher particle sizes. Ni/fluorinated beta catalysts were more active than Ni/fluorinated ZSM-5 catalysts for the hydrodeoxygenation of guaiacol at 180 degrees C and 15 bar of H2 for 1 h due to their higher amount of acid sites. The appropriate proportion of metallic and Br & oslash;nsted acid centers allowed for the selective obtention of cyclohexane (58%) for the Ni supported on beta fluorinated with NH4F 0.1 M catalyst. The combination of this fluorinated beta to a Ni/ordered mesoporous carbon catalyst significantly boosted its selectivity to cyclohexane from 0 to 65%. Fluorinated ZSM-5 samples, although having stronger Br & oslash;nsted acid sites, as observed by 1H NMR, they had lower amounts, leading to higher selectivity to cyclohexanol when used as catalytic supports.
Thematic Areas: Astronomia / física Catalysis Chemistry, physical Ciências biológicas ii Engenharias ii Environmental science (all) Farmacia Physical and theoretical chemistry Química
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: yolanda.cesteros@urv.cat
Author identifier: 0000-0002-5439-9358
Record's date: 2024-10-19
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://www.mdpi.com/2073-4344/14/9/586
Papper original source: Catalysts. 14 (9): 586-
APA: Quintero-Arroyo, Gabriela; Rueda, Angie C; Granados-Reyes, Judith; Fals, Jayson; Cesteros, Yolanda (2024). Effect of Acid Properties of Fluorinated Beta and ZSM-5 Zeolites Used as Supports of Ni Catalysts for the Catalytic Hydrodeoxygenation of Guaiacol. Catalysts, 14(9), 586-. DOI: 10.3390/catal14090586
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Article's DOI: 10.3390/catal14090586
Entity: Universitat Rovira i Virgili
Journal publication year: 2024
Publication Type: Journal Publications