Olefin production
AssigneeChevron Phillips Chemical Company LP
InventorsJeffrey W. Freeman, Warren M. Ewert, Bruce E. Kreischer, Ronald D. Knudsen, Glyndal D. Cowan
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Abstract
A process is provided which comprises preparing an olefin oligomerization or trimerization catalyst system and producing olefins in the presence of the olefin oligomerization or trimerization catalyst system and a solvent, wherein said catalyst system preparation comprises the steps of first contacting a chromium source and a pyrrole-containing compound to form a chromium/pyrrole mixture; second, contacting said chromium/pyrrole mixture with a metal alkyl to form a catalyst system; and then contacting said catalyst system with an alpha-olefin, preferably ethylene.
Claims15
A process to oligomerize olefins in the presence of an olefin oligomerization catalyst system wherein said oligomerization catalyst system preparation comprises the steps of:
- a) contacting a metal alkyl and a pyrrole-containing compound in the presence of an unsaturated hydrocarbon to form a metal alkyl/pyrrole mixture;
- b) contacting said metal alkyl/pyrrole mixture with a chromium source to form a catalyst system;
- and then contacting said catalyst system with an alpha-olefin.
Dependencies are inferred from the claim text.