Preparation of hydrocarbon conversion catalysts and their use in the hydrocracking of hydrocarbons

Claim 1

A PROCESS FOR THE CONVERSION OF HYDROCARBONS COMPRISING CONTACTING A HYDROCARBON FEEDSTOCK IN A REACTION ZONE UNDER CONVERSION CONDITIONS OF TEMPERATURE AND PRESSURF WITH A CATALYST, SAID CATALYST BEING PREPARED BY IMPREGNATING A REFRACTORY OXIDE SUPPORT WITH A WATER-SOLUBLE COMPOUND OF AN IRON GROUP CHYDROGENATING METAL TO CHEMICALLY BOND METAL CATIONS OF SAID COMPOUND TO SAID SUPPORT, THE SUPPORT BEING PREPARED BEFORE THE ADDITION OF THE HYDROGENATING METAL COMPOUND AND COMPRISING AT LEAST ONE REFRACTORY OXIDE SELECTED FROM THE GROUP MAGNESIA, BORIA, ALUMINA, SILICA, AND TITANIA AND MIXTURES OF THE FOREGOING, THEREAFTER WASHING THE IMPREGNATED SUPPORT WITH WATER TO REMOVE SUBSTANTIALLY ALL OF THE METAL CATIONS OF THE WATER-SOLUBLE COMPOUND NOT CHEMICALLY BOUND TO THE SUPPORT AND DRYING THE WASHED SUPPORT, AND RECOVERING THE TREATED HYDROCARBON FEEDSTOCK.