Sulfided NiMo/(Al)-MCM-41 Catalysts for Anisole Hydrodeoxygenation: Impact of Aluminium Incorporation in the Mesostructured Support
Por:
Mendez, Franklin J., Gonzalez-Mota, Manuel, Vargas-Villagran, Haydee, Gonzalez-Garcia, Gerardo, Bokhimi, Xim, Klimova, Tatiana E.
Publicada:
11 nov 2022
Categoría:
Chemistry (miscellaneous)
Resumen:
NiMoS nanocatalysts supported on MCM-41 modified with aluminium were
studied in the anisole hydrodeoxygenation. Our interest was to study the
effect of the Al incorporation to the support on the activity and
selectivity. The results indicate that the catalytic behaviour strongly
depended on the Al presence in the MCM-41 support and its loading. The
anisole conversions and the respective pseudo-first-order rate constants
increased with Al-incorporation compared to the NiMo/Si-MCM-41 sample.
The highest catalytic activity was obtained with the NiMo/Al-MCM-41(60)
nanocatalyst. Aluminum presence in the support also had a strong effect
on the selectivity of the catalysts, promoting the formation of phenol
as an intermediate product mainly through demethylation of the O-CH3
group of anisole, as well as through demethylation of 2-methylphenol
intermediate. These results were ascribed to an increased acidity of the
Al-MCM-41-supported samples and the participation of these acidic sites
in the interaction with anisole and oxygen-containing reaction
intermediates.
Filiaciones:
Mendez, Franklin J.:
Inst Politecn Nacl, CICATA Morelos, Ctr Invest Ciencia Aplicada & Tecnol Avanzada, Blvd Tecnol,1036 Z-1 P 2-2, Xochitepec 62790, Mexico
Gonzalez-Mota, Manuel:
Univ Nacl Autonoma Mexico, Dept Ingn Quim, Fac Quim, Ciudad Univ, Ciudad De Mexico 04510, Mexico
Vargas-Villagran, Haydee:
Univ Nacl Autonoma Mexico, Dept Ingn Quim, Fac Quim, Ciudad Univ, Ciudad De Mexico 04510, Mexico
Gonzalez-Garcia, Gerardo:
Univ Guanajuato, Div Ciencias Exactas, Dept Quim, Noria Alta S-N, Guanajuato 36050, Mexico
Bokhimi, Xim:
Univ Nacl Autonoma Mexico, Dept Mat Condensada, Inst Fis, Ciudad Univ, Ciudad De Mexico 01000, Mexico
Klimova, Tatiana E.:
Univ Nacl Autonoma Mexico, Dept Ingn Quim, Fac Quim, Ciudad Univ, Ciudad De Mexico 04510, Mexico
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