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Hydrocracking of a gas oil with a catalyst consisting of oxides of vanadium and molybdenum and metallic cobalt deposited on gamma alumina

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1. A PROCESS FOR HYDROCRACKING A SULFUR-CONTAINING GAS OIL BOILING IN THE RANGE OF ABOUT 350 TO 1100*F. WHICH COMPRISES CONTACTING SAID GAS OIL UNDER MILD HYDROCRACKING CONDITIONS INCLUDING A TEMPERATURE IN THE RANGE OF 650 TO 850*F., A PRESSURE IN THE RANGE OF 200 TO 2000 P.S.I.G., AT LEAST 100 S.C.F. OF H2 PER BBL. OF LIQUID FEED, A RANGE OF 0.1 TO 10 LH SPACE VELOCITY WITH A CATALYST CONSISTING ESSENTIALLY OF POROUS ACTIVE GAMMA ALUMINA HAVING DEPOSITED THEREON A REDUCED MIXTURE OF THE OXIDES OF VANADIUM AND MOLYBDENUM AND METALLIC COBALT SO AS TO SUBSTANTIALLY REDUCE THE SULFUR CONTENT OF SAID GAS OIL AND PRODUCE A SUBSTANTIALL PROPORTION OF OLEFINS WHICH REMAIN UNHYDROGENATED IN THE CRACKED PRODUCT.
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