Catalyst for the hydrodesulfurization of residua and heavy crudes
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United States of America Patent
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app pub date -
May 13, 2011
filing date -
Nov 29, 2005
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Abandoned
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Abstract
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/Al.sub.2O.sub.3) or a titanium-alumina support (TiO.sub.2--Al.sub.2O.sub.3) 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/Al.sub.2O.sub.3) 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--Al.sub.2O.sub.3) 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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