Abstract:
A CATALYST FOR EFFECTING THE DESULFURIZATION OF SULFUROUS, HYDROCARBONACEOUS CHARGES STOCKS. THE CATALYST COMPRISES A COMPOSITE OF A SILICEOUS CARRIER MATERIAL COMBINED WITH RHENIUM SULFIDE. THE RHENIUM SULFIDE IS PRESENT IN AN AMOUNT OF FROM 0.01% TO ABOUT 2.0% BY WEIGHT, CALCULATED AS THE ELEMENTAL METAL, AND IS COMBINED WITH ONE OR MORE SULFIDED METALLIC COMPONENETS FROM GROUPS VI-B AND THE IRON-GROUP. THE USE OF THE RHENIUM COMPONENET IMPARTS ADDITIONAL HYDROGENATION ACTIVITY TO THE CATALYST.
Abstract:
A COMBINATION PROCESS INVOLVING HYDROCRACKING AND DEHYDROGENATION. HYDROCRACKING OF A HEAVIER-THAN-GASOLINE CHARGE STOCK IS EFFECTED AT CONDITION CONDUCTIVE TO AROMATIC SATURATION AND EXTENDED CATALYST STABILITY. DE HYDROGENATION OF AT LEAST A PORTION OF THE HYDROCRACKED PRODUCT EFFLUENT IS EFFECTED AT CONDITIONS WHICH ARE CONDUCTIVE TO THE CONVERSION OF NAPTHTHENES TO AROMATICS. THE HYDROCRACKING REACTION IS EFFECTED AT HIGH PRESSURES AND HIGH SPACE VELOCITIES, WHILE THE DEHYDROGENATION REACTION IS EFFECTED AT LOWER PRESSURES AND LOWER SPACE VELOCITIES.
Abstract:
A desulfurization catalyst of an alumina-containing carrier material, a nickel component and a tin component. Nickel constitutes from 1.0 percent to about 10.0 percent by weight of the composite and tin from about 0.7 percent to 7.0 percent, and preferred catalysts also contain from 4.0 percent to about 30.0 percent by weight of a Group VI-B metal component. The catalyst is prepared in a manner which inhibits the formation of nickel aluminate.
Abstract:
Sulfur-containing petroleum hydrocarbon fractions are treated at hydrodesulfurization reaction conditions in contact with a catalytic composite comprising a Group VIII metal or metal oxide, a Group VIB metal or metal oxide, and an alumina support or carrier material. The alumina support is characterized by a method of preparation which results in improved hydrodesulfurization activity of the catalytic composite.
Abstract:
A catalytic composite comprising a Group VIB and a Group VIII metal composited with an alumina support or carrier material. A catalytic composite particularly useful as a hydrodesulfurization catalyst results from the method of preparation. Basic aluminum sulfate and a Group VIII metal compound are dissolved in an aluminum chloride hydrosol followed by a mixture of a Group VIB metal compound and an aqueous urea-hexamethylenetetramine solution. The resulting hydrosol is formed into spheroidal gel particles by the oil drop method.
Abstract:
Sulfur-containing petroleum hydrocarbon fractions are treated at hydrodesulfurization reaction conditions in contact with a catalytic composite of a Group VIII metal or metal oxide, a Group VIB metal or metal oxide, and an alumina support or carrier material. The alumina carrier material is characterized by a method of preparation which results in improved hydrodesulfurization activity of the catalytic composite. The carrier material is formed by the gelation of a hydrosol prepared by dissolving a basic aluminum sulfate in an aluminum chloride hydrosol.
Abstract:
A process for hydrocracking a hydrocarbonaceous charge stock using a catalytic composite of an alumina-containing, porous carrier material and a nickel component. The composite is prepared via coextrusion, and contains from about 6.5 to about 10.5% by weight of nickel, calculated as the element, within which range maximum hydrocracking activity and stability are attained.