Disproportionation of hydrocarbons
View Patent ↗A novel hydrocarbon disproportionation process is provided and includes contacting a hydrocarbon feed comprising at least one paraffin with a disproportionation catalyst comprising a support component, a metal, and a halogen in a disproportionation reaction zone under disproportionation reaction conditions.
1. A process for disproportionating hydrocarbons comprising contacting a hydrocarbon feed comprising at least one paraffin and an initiator selected from the group consisting of a chloroalkane, a branched paraffin, at least one olefin, and combinations of any two or more thereof, with a catalyst comprising:
(a) a support component,
(b) a metal selected from the group consisting of platinum, palladium, iron, cobalt, nickel, zinc, ruthenium, rhodium, osmium, iridium, and combinations of any two or more thereof, and
(c) a halogen selected from the group consisting of chlorine, bromine, and combinations thereof; and
(d) gallium;
in a disproportionation reaction zone under disproportionation reaction conditions; and reactivating said catalyst by stripping said catalyst with hydrogen.
2. A process in accordance with claim 1 wherein the concentration of said initiator in said disproportionation reaction zone, based on the combined weight of said hydrocarbon feed and said initiator in said reaction zone, is at least about 0.01 weight percent.
3. A process in accordance with claim 1 wherein the concentration of said initiator compound in said reaction zone, based on the combined weight of said hydrocarbon feed and said initiator in said reaction zone, is at least about 0.1 weight percent.
4. A process in accordance with claim 1 wherein the concentration of said initiator in said reaction zone, based on the combined weight of said hydrocarbon feed and said initiator in said reaction zone, is at least 0.9 weight percent.
5. A process in accordance with claim 1 wherein said at least one olefin has in the range of from 2 to 20 carbon atoms per molecule.
6. A process in accordance with claim 1 wherein said at least one olefin has in the range of from 3 to 8 carbon atoms per molecule.
7. A process in accordance with claim 1 wherein said at least one olefin has in the range of from 5 to 6 carbon atoms per molecule.
8. A process in accordance with claim 1 wherein said disproportionation reaction conditions include a temperature in the range of from about 75° F. to about 500° F.
9. A process in accordance with claim 1 wherein said disproportionation reaction conditions include a temperature in the range of from about 100° F. to about 300° F.
10. A process in accordance with claim 1 wherein said disproportionation reaction conditions include a temperature in the range of from 200° F. to 300° F.
11. A process in accordance with claim 1 wherein said metal of said catalyst is selected from the group consisting of platinum, palladium, and combinations thereof.
12. A process in accordance with claim 1 wherein said halogen of said catalyst is selected from the group consisting of chlorine, bromine and combinations thereof.
13. A process in accordance with claim 1 wherein said support component of said catalyst is selected from the group consisting of alumina, silica-alumina, a zeolite, zirconia, a borate, an aluminum borate, and combinations thereof.
14. A process in accordance with claim 1 wherein said metal of said catalyst comprises platinum, said halogen of said catalyst comprises chlorine, and said support component of said catalyst comprises alumina.