Claims
- 1. A hydrocarbon conversion process which comprises contacting a hydrocarbon under hydrocracking conditions with an active alumina supported platinum catalyst prepared by contacting said catalyst at a temperature within the range of 600.degree.-1500.degree. F. with a dry activating gas comprising 30 to 100 volume percent anhydrous hydrogen chloride for at least 0.1 hour; and thereafter cooling the thus-activated catalyst for a time of at least 0.5 hour in the presence of a dry carrier gas containing 1 to 20 volume percent anhydrous hydrogen chloride.
- 2. A process according to claim 1 wherein said feed is a C.sub.5 or higher boiling hydrocarbon.
- 3. A process according to claim 1 wherein said feed in n-octane and wherein said n-octane is converted to butane.
- 4. A process according to claim 1 wherein said hydrocracking conditions are: pressure, 100-3000 psig; temperature: 300-700.degree. F.; liquid hourly space velocity, 0.5-20 and H.sub.2 /hydrocarbon mole ratio, 2-20.
- 5. A method according to claim 4 wherein said alumina is one of .gamma. alumina or .eta. alumina and said hydrogen chloride is present in said carrier gas in an amount within the range of 2 to 6 volume percent.
- 6. A method according to claim 4 wherein said alumina is .gamma. alumina.
- 7. A method according to claim 1 wherein said HCl is present in an amount within the range of 40 to 75 volume percent during said activation step and said contacting is carried out for a time within the range of 0.5 to 6 hours and said cooling is carried out over a time within the range of 0.5 to 10 hours.
- 8. A method according to claim 4 wherein said activation temperature is within the range of 1050.degree. to 1400.degree. F.
- 9. A method according to claim 8 wherein said alumina is .gamma. alumina, a concentration of said hydrogen chloride in said activation step is 41 to 62 volume percent, and a concentration of hydrogen chloride during said cooling step is 2 to 6 volume percent.
- 10. A method according to claim 9 wherein hydrogen is present as a carrier gas in said activation step and said carrier gas for said cooling is a mixture of hydrogen and nitrogen.
CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation-in-part of copending application Ser. No 664,217 filed Mar. 5, 1976 (now U.S. Pat. No. 4,003,956), which in turn is a divisional Ser. No. 458,700 filed Apr. 8, 1974, now U.S. Pat. No. 3,970,589.
US Referenced Citations (5)
Divisions (1)
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Date |
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458700 |
Apr 1974 |
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Continuation in Parts (1)
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664217 |
Mar 1976 |
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