초록

Hydrotreating with a catalyst comprising molybdenum, nickel, and phosphorus active components supported on gamma alumina is prepared with gamma alumina support particles which have been contacted with aqueous ammonia.

대표청구항 ▼

A process for hydrodenitrogenating and/or hydrodesulfurizing a hydrocarbon feedstock containing organonitrogen and/or organosulfur compounds comprising the steps: (a) contacting said feedstock with hydrogen in the presence of a catalyst composition at elevated temperatures and pressures such that so

A process for hydrodenitrogenating and/or hydrodesulfurizing a hydrocarbon feedstock containing organonitrogen and/or organosulfur compounds comprising the steps: (a) contacting said feedstock with hydrogen in the presence of a catalyst composition at elevated temperatures and pressures such that some of said organonitrogen and/or organosulfur compounds are converted to ammonia and/or hydrogen sulfide, thereby yielding a denitrogenated and/or desulfurized hydrocarbon product phase and an ammonia and/or hydrogen sulfide phase, said catalyst composition being comprised of molybdenum, nickel and phosphorous active components on support particles comprising gamma alumina, and said catalyst having been prepared by a method comprising the steps of (1) contacting said gamma alumina support particles with an aqueous solution containing ammonium hydroxide, (2) subsequently impregnating the resultant support particles with molybdenum, nickel and phosphorous by contacting said support particles with an acidic impregnating solution so as to provide composites containing molybdenum, nickel and phosphorous components, (3) drying composites obtained from step (2) at temperatures less than about 150°F., (4) calcining the impregnated particles at an elevated temperature in the presence of oxygen, and (5) sulfiding the calcined particles such that essentially all molybdenum and nickel components are converted to metal sulfides; and (b) separating said hydrocarbon product phase from said ammonia and/or hydrogen sulfide phase. A process for for denitrogenating and/or desulfurizing a hydrocarbon feedstock by contacting a catalyst with said hydrocarbon feedstock under conditions of elevated temperature and pressure and in the presence of hydrogen, said catalyst consisting essentially of molybdenum, nickel and phosphorus active components on support particles consisting essentially of gamma alumina, said catalyst having been prepared by a method comprising the steps of: (a) contacting gamma alumina support particles with an aqueous ammonia solution, said support particles having more than 60 percent of their aggregate particle pore volume in pores having diameters between about 60 and about 80 angstroms; (b) subsequently impregnating the resultant support particles with molybdenum, nickel and phosphorus by contacting said support particles with an acidic impregnating solution so as to provide a composite containing molybdenum, nickel and phosphorus components; (c) drying composites obtained from step (b) at temperatures less than about 150°F.; and (d) calcining impregnated particles from step (c) at an elevated temperature in the presence of oxygen.