Authors: Zepeda, TA; de Leon, JND; Alonso, G; Infantes-Molina, A; Galindo-Ortega, YI; Huirache-Acuna, R; Fuentes, S

Catal. Commun.. vol: 130. page: 1566-7367.
Date: OCT. 2019.
Doi: 10.1016/j.catcom.2019.105760.

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..