Novel cyclic catalytic process for the conversion of hydrocarbons

Claim 1

IN A PROCESS FOR THE CONTINUOUS CATALYTIC CRACKING OF A HYDROCARBON CHARGE WHEREIN SAID HYDROCARBON CHARGE IS CONTACTED WITH A SOLID COMBUSTION-REGENERABLE CONVERSION CATALYST IN A CONVERSION ZONE SO AS TO EFFECT CRACKING OF SAID HYDROCARBON CHARGE WITH CONCOMITANT DEPOSITION ON SAID CONVERSION CATLYST OF A COMBUSTIBLE CONTAMINATING DEPOSIT AND THEREAFTER PASSING SAID CRACKING CATALYST THROUGH A REGENERATION ZONE IN ORDER TO BURN OFF SAID COMBUSTIBLE DEPOSIT THEREBY FORMING CARBON DIOXIDE AND CARBON MONOXIDE, THE IMPROVEMENT WHICH COMPRISES ADMIXING WITH SAID SOLID COMBUSTION-REGENERABLE CRACKING CATALYST A SHAPE-SELECTIVE CRYSTALLINE ALUMINOSILICATE HAVING A PORE SIZE OF FROM ABOUT 3 TO LESS THAN ABOUT 5 ANGSTROM UNITS CONTAINING AN OXIDATION CATALYST SELECTED FROM THE GROUP CONSISTING OF GROUP I-B, II-B, VI-B AND VIII METALS AND COMPOUNDS THEREOF WITHIN ITS INTERNAL PORE STRUCTURE AND HAVING A PORE SIZE SUCH THAT CARBON DIOXIDE, CARBON MONOXIDE AND OXYGEN WILL BE ADMITTED TO THE INTERIOR PORE STRUCTURE THEREOF, AND SUFFICIENTLY SMALL TO SUBSTANTIALLY EXCLUDE N-BUTANE SO AS TO CONTROL THE RATIO OF CARBON DIOXIDE TO CARBON MONOXIDE FORMED IN SAID REGENERATION ZONE.