Catalytic composition and olefin disproportion process
AssigneeInstitut Francais du Petrole
InventorsYves Chauvin, Francoise Di Marco-Van Tiggelen
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Abstract
The invention concerns a catalytic olefin disproportion (also known as metathesis) process wherein the catalyst produced by dissolving a tungsten and/or molybdenum compound, more particularly a tungsten and/or molybdenum halide substituted with one or more phenoxo groups containing at least two hydrocarbon substituents in the ortho, ortho' positions, in a medium produced by mixing at least one quaternary ammonium halide and/or at least one quaternary phosphonium halide, at least one aluminium halide, and an organometallic aluminium compound.
Claims21
A catalytic process for disproportion or codisproportion of at least one olefin, comprising contacting the olefin with at least one tungsten or molybdenum compound, said compound being at least partially dissolved in an ionic non aqueous medium, said medium having been produced by a process comprising bringing at least one aluminum halide (A) into contact with at least one quaternary ammonium halide and/or at least one quaternary phosphonium halide (B) and with at least one organometallic aluminum compound (C).
A catalytic process according to claim l, wherein the organometallic aluminum compound (C) is of the general formula AlR.sub.x X.sub.3-x where R is a linear or branched alkyl radical containing 2 to 8 carbon atoms, X is chlorine or bromine and X equals 1, 2 or 3.
A catalytic process according to claim l, wherein the process is conducted in contact with a molybdenum compound of the formula MoX.sub.5-x (OAr).sub.x, wherein X represents chlorine or bromine and Ar represents an aromatic group containing at least two hydrocarbon substituents in the ortho, ortho' positions, and x equals 1 or 2.
Dependencies are inferred from the claim text.