Process for converting ethylene to light alpha olefins
AssigneeInstitut Francais du Petrole
InventorsDominique Commereuc, Serge Boivineau, François Hugues, Lucien Saussine
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Abstract
A process for producing light alpha olefins by ethylene oligomerisation in contact with a catalyst produced by mixing a zirconium compound with an organic compound selected from the group formed by acetals and ketals, with an aluminum hydrocarbyl compound selected from the group formed by chlorine-containing or bromine-containing aluminum hydrocarbyl compounds and with an aluminum hydrocarbyl compound selected from tris-(hydrocarbyl)-aluminum compounds.
Claims17
A process for converting ethylene to light alpha olefins comprising oligonerizing ethylene under oligomerization conditions in contact with a catalytic composition obtained by mixing:
- at least one zirconium compound with formula ZrXxYyOz, where X is a chlorine or bromine atom, Y is a radical selected from the group consisting of alkoxy RO, amido R2N, and carboxylate RCOO groups, where R is a hydrocarbyl radical containing 1 to 30 carbon atoms, x and y have whole number values of 0 to 4 and z is equal to 0 or 0.5, the sum x+y+2z being equal to 4;
- with at least one organic compound with formula (R1′)(R2′)C(OR1)(OR2) where R1′ and R2′ being a hydrogen atom or hydrocarbyl radicals containing 1 to 30 carbon atoms, and R1 and R2 being hydrocarbyl radicals containing 1 to 30 carbon atoms;
- with at least one aluminum compound with formula AlR″nX3−n where R″ is a hydrocarbyl radical containing 1 to 6 carbon atoms, X is a chlorine or bromine atom, and n is a number in the range 1 to 2;
- and with at least one, tris-(hydrocarbyl) aluminum compound with formula AlR′″3 where R′″ is a hydrocarbyl radical containing 1 to 6 carbon atoms.
Dependencies are inferred from the claim text.