Methods of Preparation of an Olefin Oligomerization Catalyst
AssigneeChevron Phillips Chemical Company LP
InventorsRonald D. Knudsen, Bruce E. Kreischer, Ronald G. Abbott, Steven D. Bridges
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Abstract
A method of making a catalyst for use in oligomerizing an olefin, comprising a chromium-containing compound, a pyrrole-containing compound, a metal alkyl, a halide-containing compound, and optionally a solvent, the method comprising abating all or a portion of water, acidic protons, or both from a composition comprising the chromium-containing compound, a composition comprising the pyrrole-containing compound, a composition comprising a non-metal halide-containing compound, a composition comprising the solvent, or combinations thereof prior to contact thereof with a composition comprising a metal halide-containing compound.
Claims20
A method of oligomerizing olefins, comprising:
- (A) preparing an oligomerization catalyst, wherein:
- (i) the catalyst comprises a chromium-containing compound, a pyrrole-containing compound, a non-halide metal alkyl, a metal halide-containing compound, and optionally a solvent, and
- (ii) the catalyst is prepared by:
- (a) contacting a composition comprising the chromium-containing compound, a composition comprising the pyrrole-containing compound, or both with all or a portion of the non-halide metal alkyl, and
- (b) subsequently contacting the components from (a) with a composition comprising the metal halide-containing compound;
- and
- (B) oligomerizing olefins by contact with the catalyst in a reaction zone.
Dependencies are inferred from the claim text.