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AssigneeHercules Incorporated
InventorsTuyen T. Nguyen, Brenda A. Lloyd
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Process for the oligomerization of 1-alkenes to internal alkenes and a catalyst therefor. 1-Alkene is combined, in liquid phase and at a temperature of from about 50 to about 200° C., with a catalyst formed by contacting at least one Group VIII transition metal salt with at least one alkylaluminum compound. If the at least one Group VIII transition metal salt includes cobalt and the at least one alkylaluminum compound includes trialkylaluminum compound the process is carried out in the substantial absence of alkoxyaluminum species. The catalyst for the isomerization of 1-alkene to internal alkene is prepared by combining at least one Group VIII transition metal salt and at least one alkylaluminum compound of the general formula AlRaXb in which R represents an alkyl radical, X represents a halogen radical, a is an integer of from 1 to 3, b is 1 or 2, and the sum (a+b) is 3, in a ratio sufficient to provide an atomic ratio of A1 in the alkylaluminum compound(s) to Group VIII transition metal(s) of at least about 1:1. If the at least one Group VIII transition metal salt includes cobalt and the at least one alkylaluminum compound includes trialkylaluminum compound the catalyst is substantially free of alkoxyaluminum species.
A process for the isomerization of 1-alkene to internal alkene, wherein 1-alkene is combined, in liquid phase and at a temperature of from about 50 to about 200° C., with unsupported catalyst formed by contacting at least one Group VIII transition metal salt and at least one alkylaluminum compound, provided that if the at least one Group VIII transition metal salt includes cobalt and the at least one alkylaluminum compound includes trialkylaluminum compound the process is carried out in the substantial absence of alkoxyaluminum species.
A process for the isomerization of 1-alkene to internal alkene, wherein 1-alkene containing at least 5 carbon atoms is combined, in liquid phase and at a temperature of from about 50 to about 200° C., with a catalyst formed by contacting at least one Group VIII transition metal salt and at least one trialkylaluminum compound, provided that if the at least one Group VIII transition metal salt includes cobalt the process is carried out in the substantial absence of alkoxyaluminum species.
The process of claim 45, wherein the at least one Group VIII transition metal salt comprises at least one compound selected from Ni(II) chloride, Co(III) acetylacetonate, PdCl2, PtCl2(cyclooctadienyl)2, Ir(III) acetylacetonate and Rh(III) acetylacetonate.
A process for the isomerization of 1-alkene to internal alkene, wherein 1-alkene containing at least 5 carbon atoms is combined, in liquid phase and at a temperature of from about 50 to about 200° C., with a catalyst formed by contacting at least one salt of a Group VIII transition metal selected from cobalt, iron, palladium, platinum, osmium, iridium, rhodium and ruthenium and at least one alkylaluminum compound, provided that if the at least one Group VIII transition metal salt includes cobalt and the at least one alkylaluminum compound includes trialkylaluminum compound the process is carried out in the substantial absence of alkoxyaluminum species;
Dependencies are inferred from the claim text.