Catalyst systems
AssigneeSaudi Arabian Oil Company
InventorsSohel Shaikh, Motaz Khawaji, Wei Xu
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Abstract
Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst having a structure according to Formula (VI) or Formula (VII). In Formulas (VI) and (VII), X is a halogen, a (C2-C30) carboxylate, acetylacetonate, or a (C1-C30) hydrocarbyl; L1 is a neutral coordinating ligand; n is an integer from 0 to 6; Y is a (C6-C20)fluorine-substituted aryl, a (C6-C20)fluorine-substituted aryloxy, or a (C1-C20)fluorine-substituted alkoxy; and L∩L is a bidentate chelating ligand. The catalyst system may also include an aluminum containing agent which includes a reaction product of an organoaluminum compound and an antifouling compound. The antifouling compound may include one or more quaternary salts.
Claims10
A method of making a catalyst system suitable for tetramerizing ethylene to form 1-octene, the method comprising mixing a chromium compound, an anion-containing compound, a bidentate chelating ligand, and an aluminum containing agent to form the catalyst system, wherein the aluminum containing agent is a reaction product of an organoaluminum compound and an antifouling compound, and wherein the antifouling compound comprises one or more quaternary salts.
Dependencies are inferred from the claim text.