Ruthenium catalyst for producing vinyl chloride, and preparation method thereof

The invention discloses a supported ionic liquid-promoted ruthenium catalyst. A preparation method of the ruthenium catalyst comprises the following steps: mixing a prepared ruthenium-containing solution with an ionic liquid to obtain a mixed solution; dropwise adding the mixed solution to a porous solid carrier under the action of ultrasonic waves at 20-60 DEG C, and performing impregnation underthe action of the ultrasonic waves for 0.5-6 h; dropwise adding an inorganic salt solution to the mixed solution-impregnated porous solid carrier under the action of the ultrasonic waves, and performing impregnation under the action of the ultrasonic waves for 1-20 h; and performing vacuum drying at 60-120 DEG C for 6-30 h to obtain the supported ionic liquid-promoted ruthenium catalyst. The catalyst has the advantages of low load capacity, high activity and good stability when used in acetylene hydrochlorination for synthesizing vinyl chloride, and has a great economical efficiency and greatindustrial application va