Catalyst and processes for olefin trimerization

B - Operations – Transporting – 01 – J

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B01J 31/00 (2006.01) B01J 27/132 (2006.01) B01J 31/12 (2006.01) B01J 31/14 (2006.01) B01J 31/18 (2006.01) B01J 31/22 (2006.01) B01J 31/34 (2006.01) C07C 2/06 (2006.01) C07C 2/08 (2006.01) C07C 2/24 (2006.01) C07C 2/26 (2006.01) C07C 2/30 (2006.01) C07C 2/32 (2006.01)

Patent

CA 2344268

A process is provided to modify an olefin production catalyst system which comprises contacting an olefin production catalyst system with ethylene prior to use. A second embodiment of the invention comprises contacting an aluminium alkyl and a pyrrole-containing compound prior to contacting a chromium containing compound and prior to contacting an olefin. A process also is provided to trimerize and/or oligomerize olefins with the novel, modified olefin catalyst production systems. These modified olefin production catalyst systems can produce less solids, such as, for example, polymer, during a trimerization reaction.

L'invention porte sur un procédé visant à modifier un système catalyseur de production d'oléfines et consistant à mettre en contact un système catalyseur de production d'oléfines avec de l'éthylène avant utilisation. Selon une seconde réalisation de cette invention, le procédé consiste à mettre en contact un aluminium alkyle et un composé contenant pyrrole avant de mettre en contact un composé contenant du chrome et avant de mettre en contact une oléfine. L'invention porte également sur un procédé de trimérisation et/ou d'oligomérisation d'oléfines avec les nouveaux systèmes catalyseurs modifiés de production d'oléfines. Ces systèmes catalyseurs modifiés de production d'oléfines peuvent produire moins de matières solides telles que des polymères lors d'une réaction de trimérisation.

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