Preparation of high activity silica-supported hydrotreating catalysts and catalysts thus prepared.

摘要

Process for preparing silica-supported catalysts containing 10-25 %w molybdenum and from 1-5 %w nickel and/or cobalt as hydrogenation metals, wherein a dried silica support is impregnated with an aqueous solution or an aqueous mixture obtained by contacting a hydrogenation metal compound with a nitrogen-containing organic ligand such as ethylene-diamine tetraacetic acid, diethylene triamine or nitrilotriacetic acid, in the presence of water.