Fatty acid nickel oil-soluble catalyst for coal/heavy oil hydrogenation co-refining and application thereof

The invention discloses a fatty acid nickel oil-soluble catalyst for coal/heavy oil hydrogenation co-refining and application thereof. The active component of the catalyst is nickel, and the weight content of nickel in the catalyst is 6%-20%. The preparation method comprises the following steps of: dissolving fatty acid required by reaction in ethanol, fully mixing the obtained solution with alkali liquor, and adding a solvent for reaction; preparing a nickel salt aqueous solution, dropwise adding the nickel salt aqueous solution into the reaction system, and continuing reaction; and after thereaction is finished, quickly separating the liquid, discarding the water phase, adding a proper amount of toluene or xylene into the oil phase, carrying out washing, carrying out rotary evaporationto remove the solvent, and carrying out drying. The fatty acid nickel coal/heavy oil hydrogenation co-refining oil-soluble catalyst provided by the invention has good oil solubility, can be well dissolved in inferior oil produ