Refining of synthetic hydrocarbon mixtures

Claim 1

THE METHOD OF TREATING A SYNTHETIC MIXTURE OF HYDROCARBONS AND OXYGENATED COMPOUNDS, WHICH MIXTURE BOILS WITHIN THE RANGE OF ABOUT 100* F. TO ABOUT 700* F. AND CONTAINS CHIEFLY COMPONENTS IN THE GASOLINE BOILING RANGE, WHICH MIXTURE CONTAINS COMBINED OXYGEN DISTRIBUTED THROUGHOUT THE ENTIRE BOILING RANGE AND PRESENT IN AN AMOUNT IN THE RANGE OF .5 TO 5 WEIGHT PER CENT AND WHICH MIXTURE IS CHARACTERIZED BY A BAD ODOR AND EXTREME INSTABILITY TOWARD OXYGEN WITH A MARKED TENDENCY TOWARD DISCOLORATION AND GUM FORMATION, WHICH METHOD COMPRISES CONTACTING SAID MIXTURE WITH A SILCA ALUMINA CATALYST OF GEL STRUCTURE CONTAINING AN AMOUNT OF ALUMINA IN THE RANGE OF ABOUT 10% TO 25% BY WEIGHT, WHICH IS SUFFICIENTLY SPENT SO THAT ITS CATALYTIC ACTIVITY IS ONLY ONE-TENTH TO FOUR-TENTHS THE CATALYTIC ACTIVITY OF FRESH CATALYST AT A TEMPERATURE IN THE RANGE OF 625* F. TO 775* F. AND WITHK A SEVERITY FACTOR IN THE RANGE OF .02 TO 2.0 SUFFICIENTLY LOW TO SUBSTANTIALLY AVOID CRACKING AND TO PRODUCE A PRODUCT OF GOOD ODOR AND STABILITY TOWARD OXYGEN, SAID SEVERITY FACTOR BEING THE CATALYST-TO-OIL WEIGHT RATIO DIVIDED BY THE WEIGHT SPACE VELOCITY TAKEN TO THE 1.5 POWER.

Claim 2

THE METHOD OF TREATING A SYNTHETIC MIXTURE OF HYDROCARBONS AND OXYGENATED COMPOUNDS, WHICH MIXTURE BOILS WITHIN THE RANGE OF ABOUT 100* F. TO ABOUT 700* F. AND CONTAINS CHIEFLY COMPONENTS IN THE GASOLINE BOILING RANGE, WHICH MIXTURE CONTAINS COMBINED OXYGEN DISTRIBUTED THROUGHOUT THE ENTIRE BOILING RANGE AND PRESENT IN AN AMOUNT IN THE RANGE OF .5 TO 5 WEIGHT PER CENT AND WHICH MIXTURE IS CHARACTERIZED BY A BAD ODOR AND EXTREME INSTABILITY TOWARD OXYGEN WITH A MARKED TENDENCY TOWARD DISCOLORATION AND GUM FORMATION, WHICH METHOD COMPRISES CONTACTING SAID MIXTURE WITH A SILCA ALUMINA CATALYST OF GEL STRUCTURE CONTAINING AN AMOUNT OF ALUMINA IN THE RANGE OF ABOUT 10% TO 25% BY WEIGHT, WHICH IS SUFFICIENTLY SPENT SO THAT ITS CATALYTIC ACTIVITY IS ONLY ONE-TENTH TO FOUR-TENTHS THE CATALYTIC ACTIVITY OF FRESH CATALYST AT A TEMPERATURE IN THE RANGE OF 625* F. TO 775* F. AND WITHK A SEVERITY FACTOR IN THE RANGE OF .02 TO 2.0 SUFFICIENTLY LOW TO SUBSTANTIALLY AVOID CRACKING AND TO PRODUCE A PRODUCT OF GOOD ODOR AND STABILITY TOWARD OXYGEN, SAID SEVERITY FACTOR BEING THE CATALYST-TO-OIL WEIGHT RATIO DIVIDED BY THE WEIGHT SPACE VELOCITY TAKEN TO THE 1.5 POWER.