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US 4,511,750 AGranted
Olefin oligomerization with an activated catalyst
AssigneeChevron Research Company
InventorStephen J. Miller
Life of this patent
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Abstract
An olefin oligomerization catalyst containing nickel sulfate on a porous support, activated by calcining in an oxidizing atmosphere, followed by inert gas treatment at a lower but elevated temperature, is useful for oligomerizing propylene and butenes.
Claims7
A process for oligomerizing a lower olefin in a lower olefin feed comprising:
- contacting said feed with a catalyst including nickel sulfate associated with a porous, inorganic oxide at oligomerization conditions, said catalyst having been activated by
- (a) contacting said catalyst with a gas containing free oxygen at a temperature in the range from about 750.degree. F. to about 1150.degree. F. for at least 2 hours;
- and
- (b) contacting the resulting catalyst with an inert gas at a temperature of about 350.degree. F. to about 750.degree. F. for at least 1 hour.
1 more element
Dependencies are inferred from the claim text.