Crystalline synthetic zeolites for the hydrocracking of hydrocarbons

Claim 1

A PROCESS FOR HYDROCRACKING HYDROCARBONS WHICH COMPRISES CONTACTING SAID HYDROCARBONS WITH A HYDROCRACKING CATALYST AT A TEMPERATURE OF ABOUT 500 TO 1,000* F., A PRESSURE OF ABOUT 500 TO 3,000 P.S.I.G., A SPACE VELOCITY OF 0.2 TO 20 V./V./HR., IN THE PRESENCE OF HYDROGEN AT A RATE OF ABOUT 500 TO 20,000 S.C.F. PER BARREL OF FEED, SAID HYDROCRACKING CATALYST COMPRISING A HYDROGENATING METAL AND A CRYSTALLINE ALUMINO-SILICATE ZEOLITE HAVING A FAUJASTIE STRUCTURE COMPOSED OF A CRYSTAL FRAMEWORK CHARACTERIZED BY CAGE AND BRIDGE CATION POSITIONS AS HEREIN DESCRIBED AND COMPRISING SILICON IONS, ALUMINUM IONS, OXYGEN IONS, ALKAI METAL IONS, AND HYDROGENCONTAINING IONS SAID ALKALI METAL IONS AND HYDROGENCONTAINING IONS PREDOMINANTLY OCCUPYING THE BRIDGE AND CAGE POSITIONS RESPECTIVELY, WHEREIN THE ELECTRON DENSITY AT THE BRIDGE POSITION IS ABOUT 1.0 TO 2.0 ELECTRONS PER CUBIC ANGSTROM AND THE ELECTRON DENSITY AT THE CAGE POSITION IS LESS THAN ABOUT 25% OF THE VALUE CORRESPONDING TO COMPLETE OCCUPANCY OF THE CAGE POSITION WITH ALKALI METAL OIN.