Catalytic conversion with activated catalyst

Claim 1

A METHOD FOR CRACKING A HYDROCARBON CHARGE WHICH COMPRISES CONTACTING THE SAME UNDER CATALYTIC CRACKING CONDITIONS INCLUDING A TEMPERATURE OF AT LEAST ABOUT 900* F. WITH A CATALYST OF A CRYSTALLINE METAL ALUMINOSILICATE WHICH HAS UNDERGONE CONTACT PRIOR TO COMPLETION OF SAID CRACKING WITH A SULFUR-CONTAINING ACTIVATOR PRESENT IN AN AMOUNT SUFFICIENT TO EFFECTIVELY ENHANCE THE ACTIVITY OF SAID CATALYST AND SELECTED FROM THE GROUP CONSISTING OF SULFUR, CARBON BISULFIDE, THIOPHENOL, A METAL SULFIDE AND A METAL ACID SULFIDE, SAID METAL BEING IDENTICAL WITH THE CATION OF THE CRYSTALLINE ALUMINOSILICATE UNDERGOING TREATMENT, WHICH CATALYST HAS RIGID THREE-DIMENSIONAL NETWORKS MADE UP OF UNIT CELLS CHARACTERIZED BY THE SUBSTANTIAL ABSENCE OF CHANGE IN UNIT CELL DIMENSIONS UPON DEHYDRATION AND REHYDRATION AND A UNIFORM PORE STRUCTURE MADE UP OF PORES OF BETWEEN ABOUT 3 AND ABOUT 15 ANGSTROMS IN DIAMETER.