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US 7,253,330 B2Granted
Oligomerization process
AssigneeExxonMobil Chemical Patents Inc.
InventorsJihad Mohammed Dakka, Hans K. T. Goris, Georges M. K. Mathys, Stephen Harold Brown, Bruce R. Cook
Life of this patent
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Abstract
In a process for oligomerizing an olefinic hydrocarbon feedstock comprising sulfur-containing molecules, the feedstock is contacted in the absence of hydrogen with a first metal oxide catalyst at a temperature in excess of 150° C. and then is contacted under olefin oligomerization conditions with a second catalyst comprising a crystalline molecular sieve, such as ZSM-22 or ZSM-57.
Claims22
A process for oligomerizing an olefinic hydrocarbon feedstock comprising sulfur-containing molecules, the process comprising:
- (a) contacting the feedstock in the absence of hydrogen with a first metal oxide catalyst at a temperature of from about 180° C. to about 260° C. to convert at least a portion of said sulfur-containing molecules to larger sulfur-containing species, and then
- (b) contacting the feedstock under olefin oligomerization conditions with a second catalyst comprising a crystalline molecular sieve.
Dependencies are inferred from the claim text.