| abstract |
A process for preparing a catalyst for use in oligomerizing an olefin containing a chromium-containing compound, a pyrrole-containing compound, a metal alkyl, a halide-containing compound, and optionally a solvent, the method comprising a composition comprising a chromium-containing compound Contacting a composition comprising a metal alkyl with a composition, wherein the composition comprising a chromium-containing compound is added to a composition comprising a metal alkyl.n n n n Catalyst, olefin, oligomerization |