Experimental study on two-stage catalytic hydroprocessing of middle-temperature coal tar to clean liquid fuels

► MoCo and WNi catalysts supported on γ-alumina were made. ► Catalysts were filled in two-stage fixed beds for hydroprocessing of middle-temperature coal tar. ► Pressure and LHSV had obvious effects on hydrogenation performance. ► Heteroatoms in raw tar were greatly reduced and high-quality fuels were obtained. ► Details about the gasoline and diesel products were determined by GC-MS and FT-IR.