Purification of benzene using a platinum-containing catalyst

Claim 1

A METHOD FOR THE REMOVAL OF THIOPHENIC MATERIALS FROM A BENZENE FRACTION CONTAINING THIOPHENIC MATERIALS THAT COMPRISES CONTACTING SAID BENZENE FRACTION WITH A CATALYST COMPRISING BETWEEN ABOUT 0.1 PERCENT AND ABOUT 1 PERCENT, BY WEIGHT OF THE CATALYST, OF PLATINUM DEPOSITED UPON ALUMINA, IN THE PRESENCE OF HYDROGEN IN AMOUNTS, EXPRESSED IN TERMS OF THE MOLE RATIO OF HYDROGEN TO HYDROCARBON, VARYING BETWEEN ABOUT 4 AND 12, AT PRESSURES VARYING BETWEEN ABOUT 200P.S.I.G. AND ABOUT 1200 P.S.I.G., AT A LIQUID HOURLY SPACE VELOCITY, VARYING BETWEEN ABOUT 0.5 AND ABOUT 10, AND WITHIN AN OPERATING TEMPERATURE BAND OF 25 DEGREES ON THE FAHRENHEIT SCALE THAT FALLS WITHIN THE RANGE VARYING BETWEEN ABOUT 450* F. AND ABOUT 550* F.; SAID OPERATING TEMPERABAND BEING BETWEEN ABOUT 500* F./AND ABOUT 525* F., AT A LIQUID HOURLY SPACE VELOCITY OF ABOUT 1 AND A PRESSURE OF ABOUT 1000 P.S.I.G.; AND SAID OPERATING TEMPERATURE BAND BEING BELOW 500-525* F. WHEN THE LIQUID HOURLY SPACE VELOCITY IS LOWER THAN ABOUT 1 AND WHEN THE PRESSURE IS GREATER THAN ABOUT 1000 P.S.I.G.; AND