| abstract |
(57) [Summary]nA method is provided for improving an olefin production catalyst system, comprising contacting the olefin production catalyst system with ethylene prior to use. A second aspect of the present invention includes the step of contacting the alkylaluminum with the pyrrole-containing compound before contacting with the chromium-containing compound and before contacting with the olefin. A method for trimerizing and / or oligomerizing olefins using the new and improved olefin production catalyst system is also provided. These improved olefin production catalyst systems can reduce the formation of solids, such as, for example, polymers during the trimerization reaction. |