| 摘要 |
A catalyst for hydrotreating, especially hydrodesulfurization, of residua and heavy crudes is prepared by synthesizing the support from titanium and boehmite, to form either a titanium/alumina support (TiO<SUB>2</SUB>/Al<SUB>2</SUB>O<SUB>3</SUB>) or a titanium-alumina support (TiO<SUB>2</SUB>-Al<SUB>2</SUB>O<SUB>3</SUB>) that is thereafter provided with at least one hydrogenating metal from group VIB in oxide form and a promoter from group VIII also in oxide form. The (TiO<SUB>2</SUB>/Al<SUB>2</SUB>O<SUB>3</SUB>) support is prepared from boehmite, which is peptized by using an inorganic acid, then extruded, calcined and impregnated with a solution containing titanium, while the (TiO<SUB>2</SUB>-Al<SUB>2</SUB>O<SUB>3</SUB>) support is prepared by admixing boehmite with a titanium-containing solution, peptized using an inorganic acid, extruded and calcined to obtain the titanium-alumina support.
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