Treated alumina material for fixed hydrofining beds

摘要: A hydrotreating process comprises contacting a substantially liquid hydrocarbon-containing feed stream, which contains compounds of sulfur and metals (preferably Ni and/or V), in the presence fixed catalyst bed comprising (a) at least one layer impregnated, spherical alumina-containing particles have been prepared by steps impregnating specific starting material with dissolved magnesium compound then heating thus impregnated about 500°-900° C. for improved crush strength retention. In preferred embodiment, further (b) refractory inorganic carrier hydrogenation promoter. composition matter described above, preparing them are also provided.