Sulfided Mo and CoMo supported on zeolite as hydrodesulfurization catalysts: transformation of dibenzothiophene and 4,6-dimethyldibenzothiophene

Highly active sulfided CoMo catalyst on nano-structured TiO2

“…No important differences in selectivity between the two catalysts were observed, where direct desulfurization to biphenyl [17] was favored. The small proportion of hydrogenated products (cylohexylbenzene and bicyclohexyl) observed suggested that on our ns-T material Mo could be efficiently promoted by Co [18], in contrast with that reported for anatase TiO 2 -supported CoMo catalysts [4].…”

Hydrodesulfurization of 4,6-dimethyldibenzothiophene over Pt, Pd, and Pt–Pd catalysts supported on amorphous silica–alumina

“…Acidic supports, such as amorphous silica-alumina (ASA) and zeolites, increase the conversion of dibenzothiophene (DBT) [7] and of DBT substituted in the 4-and 6-position [7][8][9][10][11]. They enable dealkylation and isomerization reactions of the alkyl substituents, which may transform refractory components into more reactive species and thus accelerate HDS [7,11]. Acidic supports may also improve the catalytic activity of the catalyst particles.…”

Preparation and evaluation of a well-ordered mesoporous nickel-molybdenum/silica opal hydrodesulfurization model catalyst

“…5, the activity obviously increased with the increase in reaction temperature. Comparing with the literature [1], the activity of the model catalyst is lower than that of CoMo/alumina but higher than that of CoMo/zeolite. Regarding the reaction rate (Table 3), it also exhibited an increasing tendency with the increase in reaction temperature.…”

“…A large variety of ''traditional'' supports such as Al 2 O 3 , SiO 2 , Zeolites [1], and mixed oxides [2,3] have already been used for hydrodesulfurization (HDS) catalysts. The HDS performances of catalysts strongly depend on the nature of the support [4].…”