Hydrocracking process and catalysts

Claim 1

A METHOD FOR HYDROCRACKING A HYDROCARBON FEEDSTOCK TO PRODUCE LOWER BOILING HYDROCARBONS, WHICH COMPRISES SUBJECTING SAID FEEDSTOCK TO HYDROCRACKING, CONDITIONS OF TEMPERATURE AND PRESSURE INCLUDING A PRESSURE ABOVE ABOUT 800 P.S.I.G., IN THE PRESENCE OF ADDED HYDROGEN AND A FIXED BED OF HYDROCRACKING CATALYST COMPRISING A COPELLETED COMPOSITE AND (A) A ZEOLITE CATALYST COMPONENT COMPRISING A MINOR PROPORTION OF A GROUP VIII METAL HYDROGENATING COMPONENT AND A MAJOR PROPORTION OF A CRYSTALLINE ZEOLITIC, ALUMINO-SILICATE MOLECULAR SIEVE CRACKING COMPONENT CHARACTERIZED BY A RELATIVELY UNIFORM CRYSTAL PORE DIAMETER BETWEEN ABOUT 6 AND 14 A., A SIO2/AL2O3 MOLE-RATIO GREATER THAN ABOUT 3, AND A ZEOLITIC CATION CONTENT INCLUDING A SUBSTANTIAL PROPORTION OF HYDROGEN IONS AMOUNTING TO AT LEAST ABOUT 20% OF THE TOTAL IONEXCHANGE CAPACITY THEREOF,AND (B) AT LEAST 10% BY WEIGHT OF A POWERED ADJUVANT SELECTED FROM THE CLASS CONSISTING OF ALUMINA, MAGNESIA, SILICA, HYDROGEN CLAYS AND MIXTURES THEREOF, THE RELATIVE PROPORTION OF SAID COMPONENTS (A) AND (B) BEING FURTHER ADJUSTED AND CORRELATED WITH THE ZEOLITIC HYDROGEN ION CONTENT OF SAID COMPONENT (A) PROVIDE A FINISHED CATALYST HAVING A HYDROCRACKING ACTIVITY ON A BULK-VOLUME BASIS AT LEAST SUBSTANTIALLY EQUAL TO THE ACTIVITY OF SAID COMPONENT (A) ALONE WHEN PELLETED TO THE SAME SIZE AND TO A BULK DENSITY OF 0.7 GM./ML.

Claim 2

A METHOD FOR HYDROCRACKING A HYDROCARBON FEEDSTOCK TO PRODUCE LOWER BOILING HYDROCARBONS, WHICH COMPRISES SUBJECTING SAID FEEDSTOCK TO HYDROCRACKING, CONDITIONS OF TEMPERATURE AND PRESSURE INCLUDING A PRESSURE ABOVE ABOUT 800 P.S.I.G., IN THE PRESENCE OF ADDED HYDROGEN AND A FIXED BED OF HYDROCRACKING CATALYST COMPRISING A COPELLETED COMPOSITE AND (A) A ZEOLITE CATALYST COMPONENT COMPRISING A MINOR PROPORTION OF A GROUP VIII METAL HYDROGENATING COMPONENT AND A MAJOR PROPORTION OF A CRYSTALLINE ZEOLITIC, ALUMINO-SILICATE MOLECULAR SIEVE CRACKING COMPONENT CHARACTERIZED BY A RELATIVELY UNIFORM CRYSTAL PORE DIAMETER BETWEEN ABOUT 6 AND 14 A., A SIO2/AL2O3 MOLE-RATIO GREATER THAN ABOUT 3, AND A ZEOLITIC CATION CONTENT INCLUDING A SUBSTANTIAL PROPORTION OF HYDROGEN IONS AMOUNTING TO AT LEAST ABOUT 20% OF THE TOTAL IONEXCHANGE CAPACITY THEREOF,AND (B) AT LEAST 10% BY WEIGHT OF A POWERED ADJUVANT SELECTED FROM THE CLASS CONSISTING OF ALUMINA, MAGNESIA, SILICA, HYDROGEN CLAYS AND MIXTURES THEREOF, THE RELATIVE PROPORTION OF SAID COMPONENTS (A) AND (B) BEING FURTHER ADJUSTED AND CORRELATED WITH THE ZEOLITIC HYDROGEN ION CONTENT OF SAID COMPONENT (A) PROVIDE A FINISHED CATALYST HAVING A HYDROCRACKING ACTIVITY ON A BULK-VOLUME BASIS AT LEAST SUBSTANTIALLY EQUAL TO THE ACTIVITY OF SAID COMPONENT (A) ALONE WHEN PELLETED TO THE SAME SIZE AND TO A BULK DENSITY OF 0.7 GM./ML.