FIELD: catalytic chemistry, particularly, preparation of catalysts of oil stock hydrofining; applicable in oil refining industry. SUBSTANCE: catalyst of oil fractions hydrofining contains aluminum oxide, molybdenum oxide, nickel oxide or cobalt oxide, compound of tungsten and silicon. Catalyst is distinguished by the fact that compound of tungsten and silicon is used in the form of silicon-tungsten complex. Catalyst contains the following amount of components, wt.%: molybdenum oxide, 10-14; nickel oxide or cobalt oxide, 3-5; silicon tungsten complex, 1.02-4.08; aluminum oxide, 76.92-85.98. The method of catalyst preparation is also included in the method description. EFFECT: higher activity of catalyst. 2 cl, 1 tbl, 6 ex
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