Effective supports to moderate H2S inhibition on cobalt and nickel molybdenum sulfide catalysts in deep desulfurization of gas oil Original Research Article

Deep desulfurization of gas oil was attempted in the presence of H2S over commercially available catalysts. Hydrotreated gas oil containing 340 ppm of sulfur (ppmS) was successfully desulfurized to less than 10 ppmS under the presence of 1.67% H2S over CoMoS and NiMoS supported on acidic supports. Such supports are believed to enhance the sulfur release from active sites and the hydrogenation of refractory sulfur species to accelerate their deep desulfurization.