CATALYST, METHOD OF PREPARATION THEREOF (VARIANTS), AND DIESEL FRACTION HYDRODESULFURIZATION PROCESS Russian patent published in 2007 - IPC B01J23/882 B01J27/185 B01J27/19 B01J21/04 B01J37/02 C10G45/08 

FIELD: catalysts in petroleum processing and petrochemistry.

SUBSTANCE: proposed catalyst is composed of 12.0-25.0% MoO₃, 3.3-6.5% CoO, 0.5-1.0% P₂O₅, and Al₂O₃ to the balance. Catalyst preparation comprises one- or two-step impregnation of support with solution obtained by mixing solutions of ammonium paramolybdate, cobalt nitrate, phosphoric and citric acids taken at ratios P/Mo = 0.06-0.15 and citric acid monohydrate/Co = 1±0.1, or mixing solutions of ammonium paramolybdate and phosphoric acid at ratio P/Mo 0.06-0.15 and cobalt acetate followed by drying and calcination stages. Diesel fraction hydrodesulfurization process is carried out in presence of above-defined catalyst at 340-360°C and H₂-to-feedstock ratio = 500.

EFFECT: intensified diesel fraction desulfurization.

7 cl, 2 tbl, 13 ex