V-Containing Heteropoly Acids with Keggin Structure as Precursors of Sulfide Catalysts: Regularities of the Convertion of Dibenzothiophene and Naphthalene on Nonpromoted Mo-V Catalysts

Mixed PMoV heteropoly acids with Keggin structures H3+xPMo12-xV(x)O(40) (x = 1-6) and modified sulfide catalysts on their basis were synthesized, their physicochemical characteristics were determined, and their performance in the reactions of hydrodesulfurization (HDS) of dibenzothiophene (DBT) and hydrogenation of naphthalene was evaluated. Modification of the Mo-containing catalysts with vanadium by impregnation with a solution of mixed heteropoly acids was found to enhance their catalytic activity in the studied reactions, as well as to increase the selectivity for the direct hydrodesulfurization route of the DBT HDS reaction.

Automated summary

In this study, mixed PMoV heteropoly acids with Keggin structures and modified sulfide catalysts were synthesized and their performance in hydrodesulfurization (HDS) of dibenzothiophene (DBT) and hydrogenation of naphthalene was evaluated. The results showed that modification of the Mo-containing catalysts with vanadium using a solution of mixed heteropoly acids enhanced their catalytic activity and increased the selectivity for the direct hydrodesulfurization route of the DBT HDS reaction.