Hydrocracking of hydrocarbons with a catalyst composite comprising a tungsten compound and a metal compound from group viii on an activated alumina support

Claim 1

THE PROCESS FOR HYDROCRACKING A HYDROCARBON FEED STOCK WHICH BOILS ABOVE ABOUT 300*F. AND WHICH IS SUBSTANTIALLY FREE OF ASPHALTIC MATERIAL TO PRODUCE SUBSTANTIAL AMOUNTS OF LOWER BOILING HYDROCARBONS, WHICH PROCESS COMPRISES CONTACTING THE HYDROCARBON FEED STOCK WITH HYDROGEN UNDER HYDROCRACKING REACTION CONDITIONS IN THE PRESENCE OF A CATALYST COMPRISING ESSENTIALY A MEMBER OF THE GROUP CONSISTING OF TUNGSTEN OXIDE AND SULFIDE MIXED WITH A MEMBER OF THE GROUP CONSISTING OF NICKEL, NICKEL OXIDE, NICKEL SULFIDE, PALLADIUM AND PALLADIUM SULFIDE, WHICH CATALYST IS COMPOSITED WITH A MAJOR AMOUNT OF AN ACTIVATED ALUMINA PREPARED BY CALCINING A SUBSTANCE WHICH IS PREDOMINANTLY COMPOSES OF AN ALUMINUM HYDOXIDE CONTAINING FROM 1.2 TO 2.6 MOLS OF WATER OF HYDRATION, SAID ALUMINUM HYDROXIDE BEING PREPARED BY PRECIPITATION FROM A SOLUTION OF AN ALUMINUM SALT AT A PH BETWEEN 7 AND 12, AND DRYING TO THE ABOVE MENTIONED WATER OF HYDRATION CONTENT PRIOR TO SUBSTANTIAL TRANSFORMATION TO AN ALUMINUM HYDROXIDE HAVING A LOWR OR HIGHER WATER OF HYDRATION CONTENT AND UNDER CONDITIONS SO AS TO PRE/ VENT THE FORMATION OF AN ALUMINUM HYDROXIDE HAVING A LOWER OR HIGHER WATER OF HYDRATION CONTENT.