Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
192 words
IN THE PROCESS OF UPGRADING THE OCTANE NUMBER OF FEED HYDROCARBON FRACTIONS BOILING IN THE NAPHTHA RANGE HAVING A CLEAR RESEARCH OCTANE NUMBER OF LESS THAN ABOUT 65 TO PRODUCTS BOILING IN THE SAME RANGE HAVING A CLEAR RESEARCH OCTANE NUMBER OF AT LEAST ABOUT 82 BY CONTACTING SUCH FEED FRACTIONS WITH A CATALYST COMPRISING A CRYSTALLINE ALUMINOSILICATE ZEOLITE CATALYST HAVING A SILICA TO ALUMINA RATIO OF AT LEAST ABOUT 12, A CONSTRAINT INDEX OF ABOUT 1 TO 12 AND A CRYSTAL DENSITY OF NOT SUBSTANTIALLY BELOW ABOUT 1,6 GRAMS PER CUBIC CENTIMETER AT ELEVATED TEMPERATURES OF ABOUT 500* TO 1500*F; THE IMPROVEMENT, WHEREBY CONVERTING MORE OF SAID FEED TO SAID PRODUCT AT AN EQUIVALENT OCTANE NUMBER INCREASE, WHICH COMPRISES UTILIZING AS SAID CATALYST SAID ZEOLITE HAVING ABOUT 0.1 TO 10 WEIGHT PERCENT OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ZINC AND CADMIUM INCORPORATED THEREWITH, SAID ZEOLITE HAVING A MODIFIED ACTIVITY EQUIVALENT TO THE ACTIVITY OF SUCH ZEOLITE WHICH HAS HAD ABOUT 0.1 TO 3 WEIGHT PERCENT OF AT LEAST ONE METAL MOIETY SELECTED FROM THE GROUP CONSISTING OF SODIUM, LITHIUM, POTASSIUM, PHOSPHORUS, ANTIMONY, AND ARSENIC INCORPORATED THEREWITH.
Claim 2
Dependent Claim
192 words
IN THE PROCESS OF UPGRADING THE OCTANE NUMBER OF FEED HYDROCARBON FRACTIONS BOILING IN THE NAPHTHA RANGE HAVING A CLEAR RESEARCH OCTANE NUMBER OF LESS THAN ABOUT 65 TO PRODUCTS BOILING IN THE SAME RANGE HAVING A CLEAR RESEARCH OCTANE NUMBER OF AT LEAST ABOUT 82 BY CONTACTING SUCH FEED FRACTIONS WITH A CATALYST COMPRISING A CRYSTALLINE ALUMINOSILICATE ZEOLITE CATALYST HAVING A SILICA TO ALUMINA RATIO OF AT LEAST ABOUT 12, A CONSTRAINT INDEX OF ABOUT 1 TO 12 AND A CRYSTAL DENSITY OF NOT SUBSTANTIALLY BELOW ABOUT 1,6 GRAMS PER CUBIC CENTIMETER AT ELEVATED TEMPERATURES OF ABOUT 500* TO 1500*F; THE IMPROVEMENT, WHEREBY CONVERTING MORE OF SAID FEED TO SAID PRODUCT AT AN EQUIVALENT OCTANE NUMBER INCREASE, WHICH COMPRISES UTILIZING AS SAID CATALYST SAID ZEOLITE HAVING ABOUT 0.1 TO 10 WEIGHT PERCENT OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ZINC AND CADMIUM INCORPORATED THEREWITH, SAID ZEOLITE HAVING A MODIFIED ACTIVITY EQUIVALENT TO THE ACTIVITY OF SUCH ZEOLITE WHICH HAS HAD ABOUT 0.1 TO 3 WEIGHT PERCENT OF AT LEAST ONE METAL MOIETY SELECTED FROM THE GROUP CONSISTING OF SODIUM, LITHIUM, POTASSIUM, PHOSPHORUS, ANTIMONY, AND ARSENIC INCORPORATED THEREWITH.
Claim 3
Dependent Claim
15 words
The improved process claimed in claim 1 wherein said incorporated metals are zinc and sodium.
Claim 4
Dependent Claim
14 words
The improved process claimed in claim 1 carried out at about 700* to 900*F.
Claim 5
Dependent Claim
19 words
The improved process claimed in claim 1 carried out at a space velocity of about 0.1 to 15 WHSV.
Claim 6
Dependent Claim
28 words
The improved process claimed in claim 1 wherein said zeolite is at least one member selected from the group consisting of ZSM-5, ZSM-11, ZSM-12, ZSM-21 and TEA mordenite.
Claim 7
Dependent Claim
23 words
The improved process claimed in claim 1 wherein said zeolite is ZSM-5 having a silica to alumina ratio of at least about 30.
Claim 8
Dependent Claim
16 words
The improved process claimed in claim 1 wherein said catalyst is zinc and sodium exchanged ZSM-5.
Claim 9
Dependent Claim
34 words
The improved process claimed in claim 1 wherein said incorporated metals are zinc or cadmium as set forth and said modified activity is engendered by steaming said zeolite prior to carrying out said process.