Аннотация:The hydroconversion of wood biomass in oil tar was studied in an autoclave at a hydrogen pressure of 7 MPa in the presence of a nanosized molybdenum-containing catalyst. It was found that the conversion of biomass increased and concentrations of sulfur and unsaturated hydrocarbons in distillate products decreased as the fraction of sawdust in the paste was increased to 32%. The maximum rate of distillate formation and minimum coke formation were established in the experiments executed at 425°C. Hydroconversion reaction rate constant at this temperature was calculated. The possible mechanism for hydroconversion of biomass in a hydrocarbon medium was considered.