초록 ▼

This invention relates to a process for preparing highly active hydrotreating catalysts prepared by incorporating a metals solution containing an element selected from the group consisting of molybdenum, tungsten and mixtures thereof, an element selected from the group consisting of nickel, cobalt a

This invention relates to a process for preparing highly active hydrotreating catalysts prepared by incorporating a metals solution containing an element selected from the group consisting of molybdenum, tungsten and mixtures thereof, an element selected from the group consisting of nickel, cobalt and mixtures thereof, and a stabilizing amount of phosphorus into an alumina hydrogel support. The final calcined catalysts have surface areas greater than about 300 m2/g, crush strengths greater than about 20 lbs and more than about 80% of their pore volume in pores having diameters less than about 50 Å.

대표청구항 ▼

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300°F. to about 850°F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m2/g and at least abo

A process for hydrotreating hydrocarbon feeds by contacting said feeds at a temperature in the range of from about 300°F. to about 850°F. and a pressure in the range of from about 200 psig to about 2500 psig with a hydrotreating catalyst which has a surface area above about 300 m2/g and at least about 80% of the pore volume in pores having diameters less than about 50 Å, wherein said catalyst is prepared by a process which comprises: (a) precipitating an aqueous solution of one or more aluminum salts(s) by adjusting the pH of said solution to a range between about 5.5 and about 10.0 and a temperature in the range between about 20°C. and about 90°C., (b) aging the precipitate at a temperature ranging from about 20°C. to about 90°C. for at least about 15 minutes at a pH ranging from about 11.0 to about 12.5, (c) washing the precipitate, (d) mixing the precipitate with a solution containing solubilized salts of a heavy metal selected from the group consisting of molybdenum, tungsten and mixtures thereof and an element selected from the group consisting of nickel, cobalt and mixtures thereof, and a phosphorus-containing compound in an amount of from about 0.2 to about 1.5 moles of phosphorus per mole of heavy metal at a pH in the range between about 4.0 and about 8.0 and a temperature in the range between about 25°C. and about 100°C. until adsorption of the metal salts onto the gel is sufficient to yield a final catalyst having from about 1% w to about 5% w nickel and/or cobalt and from about 8% w to about 32% w heavy metal, (e) extruding the product of step (d), and (f) drying and calcining the product of step (e) at a temperature ranging from about 300°C. to about 900°C.