Hydrodesulfurization activity of Ni-containing unsupported Ga(x)WS2 catalysts

Nickel addition in the unsupported Ga-containing WS2 catalysts of varying Ga-content on their catalytic performance for the hydrodesulfurization of dibenzothiophene was studied. Nickel addition caused a drastic enhancement of the catalytic activity of the samples. The catalyst with 1.5 wt% Ni additi...

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Bibliographic Details
Published in:Catalysis communications 2019-10, Vol.130, p.105760, Article 105760
Main Authors: Zepeda, T.A., de León, J.N. Díaz, Alonso, G., Infantes-Molina, A., Galindo-Ortega, Y.I., Huirache-Acuña, R., Fuentes, S.
Format: Article
Language:English
Subjects:
Dibenzothiophene
Gallium
Hydrocracking
Unsupported catalysts, hydrodesulfurization
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Summary:Nickel addition in the unsupported Ga-containing WS2 catalysts of varying Ga-content on their catalytic performance for the hydrodesulfurization of dibenzothiophene was studied. Nickel addition caused a drastic enhancement of the catalytic activity of the samples. The catalyst with 1.5 wt% Ni addition showed the highest activity. Besides, all Ga-loaded catalysts enhanced the hydrogenation pathway of dibenzothiophene transformation, starting with the hydrocracking reactions of the aromatic rings prior to their hydrogenation. FTIR studies of NO adsorption showed that Ga-addition increased both the dispersion of Ni and W species and the interaction of Ni species with W. [Display omitted] •Ga addition has a strong effect on the morphology of NiWS2 phase.•Ga incorporation enhanced the total acidity of the catalysts.•Ga incorporation enhanced the catalytic performance of the catalysts in the HDS of DBT.
ISSN:1566-7367
1873-3905
DOI:10.1016/j.catcom.2019.105760