Ifp Energies Nouvelles

Institut Francais Du Pe'trole

Universiteit Van Amsterdam

Centre National De La Recherche Scientifique

Ecole Nationale Superieure De Chimie De Rennes

Institut Fran&ccedil;ais Du Petrole

Helene Olivier-Bourbigou

Lionel Magna

Dominique Commereuc

Pierre-Alain Breuil

David Proriol

Joost Reek

Pierre Boulens

Lucien Saussine

Stephane Harry

Emmanuel Pellier

Claudine Rangheard

Denis Uzio

Francois Hugues

Gerard Hillion

Christophe Vallee

Natacha Touchais

Andre Hirschauer

Yves Chauvin

Ludovic Chahen

Bastien Leger

Alain Roucoux

Emmanuelle Guillon

Blaise Didillon

Fabrice Diehl

Laurent Bournay

Nicolas Cadran

Marc Mauduit

Catherine Santini

Christophe Gautreau

Laurent Savary

Olivia Martin

Mathieu Rouen

Severine Forget

Sebastien Drochon

Mikaël Berthod

Pierre Dixneuf

Adrien Boudier

Gerhard Hillebrand

Vinciane Kelsen

Christine Bibal

Cedrik Popelin

Cyril Thurier

Sandrine Berard

The invention concerns a process for the neutralization of a catalytic system for the oligomerization of olefins, said catalytic system comprising at least one halogenated derivative, characterized in that the reaction effluent is brought into contact with at least one nitrile compound.

Process for the neutralization of a catalytic system for the dimerization of olefins containing at least one halogenated derivative

The invention describes a novel catalytic composition comprising at least one nickel precursor A with at least one diphosphinamine ligand B1 of formula (R1)(R'1)P&#x2014;N(R3)&#x2014;P(R2)(R&#x2032;2) or an iminobisphosphine ligand B2 of formula (R3)N&#x2550;P(R1)(R&#x2032;1)&#x2014;P(R2)(R&#x2032;2) or an iminobisphosphine ligand B&#x2032;2 of formula (R3)N&#x2550;P(R2)(R&#x2032;2)&#x2014;P(R1)(R&#x2032;1). The invention also describes the use of said catalytic composition in a method for the oligomerisation of olefins.

Nickel-based catalytic composition and use thereof in a method for the oligomerisation of olefins

A composition is described which comprises at least one chromium compound, at least one aryloxy compound of an element M selected from the group formed by magnesium, calcium, strontium and barium, with general formula [M(RO)X], in which RO is an aryloxy radical of a derivative ROH containing 6 to 80 carbon atoms, X is a halogen or a hydrocarbyl radical containing 1 to 30 carbon atoms, n is a whole number which may take the values 0 or 1 and y is a whole number in the range 1 to 10, and at least one additive selected from ether type compounds, which may or may not be cyclic, introduced in a near-stoichiometric quantity with respect to the element M.

Catalytic composition and process for oligomerizing ethylene into 1-hexene

The invention describes a catalytic composition obtained by interaction of an alkyl titanate on the one hand with a preformed mixture of an alkylaluminium and a Lewis base on the other hand. The invention also describes the use of said composition in a process for the selective dimerization of ethylene to 1-butene.

Catalytic composition and process for the selective dimerization of ethylene to 1-butene

The invention describes a novel dissymmetric nickel-based complex and the method of preparation thereof from at least one diphosphinamine ligand B1 of formula (R)(R')P&#x2014;N(R)&#x2014;P(R)(R&#x2032;), or an iminobisphosphine ligand B2 of formula (R)N&#x2550;P(R)(R&#x2032;)&#x2014;P(R)(R&#x2032;). The invention also concerns the use of said complex in a method for oligomerisation of olefins.

Nickel-based complex and use thereof in a method for the oligomerisation of olefins

This invention describes a process for metathesis of olefins from feedstocks obtained from the Fischer-Tropsch process, using as catalyst a ruthenium alkylidene complex comprising a saturated or unsaturated, dissymmetrical N-heterocyclic carbene (NHC) ligand.

Process for metathesis of olefins obtained from Fischer-Tropsch fractions using a ruthenium complex comprising a dissymmetrical N-heterocyclic diaminocarbene

The present invention describes a novel catalytic composition comprising at least one nickel complex, said complex being obtained from a mixture comprising at least one nickel precursor A with at least one imino-imidazole ligand B and a method of oligomerization of olefins using said catalytic composition.

Nickel-based catalytic composition and method of oligomerization of olefins using said composition

The invention concerns a process for the selective dimerization of ethylene to 1-butene employing a catalytic composition comprising at least one alkoxy or aryloxy titanium compound, at least one additive selected from ether type compounds and at least one aluminium compound.

Process for the selective dimerisation of ethylene to 1-butene

The invention describes a novel type of nickel-based complex and its preparation method. The invention also concerns the use of said complex in a process for the transformation of olefins.

Cyclic nickel-based complexes and their use in a process for the transformation of olefins

Nickel-based complexes and their use in a process for the transformation of olefins

The invention describes a process for the production of middle distillate hydrocarbon bases from an ethanol feedstock that is produced from a renewable source that is obtained from biomass, comprising a stage for purification of said feedstock, a stage for dehydration of said purified feedstock into an effluent that is for the most part ethylene and comprises water, at least one stage for separating water, a first stage for oligomerization of the effluent that is for the most part ethylene into at least one olefinic effluent that comprises at least 80% by weight of olefins that have four or more carbon atoms, in the presence of a homogeneous catalyst that comprises at least one bivalent nickel compound, whereby a second oligomerization stage produces middle distillate hydrocarbon bases in the presence of an amorphous or zeolitic catalyst that has at least pore openings that contain 10 or 12 oxygen atoms, producing middle distillate hydrocarbon bases, and a fractionation stage.

Flexible process for transformation of ethanol into middle distillates implementing a homogeneous catalytic system and a heterogeneous catalytic system

The invention describes a nickel-based composition. The invention also concerns the use of said composition as a catalytic composition in an olefin oligomerization process.

Nickel-based catalytic composition, and its use in a process for the oligomerization of olefins

A process for producing a base for a fuel from a C2 ethanol feedstock, by a first stage for oligomerization of the feedstock into a hydrocarbon effluent that contains a mixture of olefins for the most part having between 4 and 30 carbons, and contains a C10-C24 fraction that has a mean linearity that is greater than 60%, in the presence of a homogeneous catalytic system that contains a metal precursor of titanium, zirconium, hafnium, nickel and/or iron, a second stage for oligomerization of a portion of the effluent that is obtained from stage a), into a hydrocarbon effluent that contains a mixture of olefins for the most part having between 4 and 30 carbon atoms, and containing a C10-C24 fraction that has a mean linearity that is less than 50%, in the presence of a homogeneous catalytic system.

Process for the production of a fuel base from an ethylene feedstock implementing at least one oligomerization stage in the presence of a homogeneous catalytic system

Novel group 6 organometallic compounds, supported on anions by means of at least one covalent metal-oxygen bond, are obtained by reaction of at least one borate or aluminate comprising at least one hydroxy group with at least one compound of a group 6 transition metal. These compounds are used in a catalytic composition utilized in an olefin metathesis method.

Complexes and method for synthesis of group 6 organometallics grafted on anions, and use thereof in an olefin metathesis method

Novel group 6 organometallic compounds are obtained by reaction of at least one boron compound comprising at least one hydroxy, sulfhydryl or amino function with at least one compound of a group 6 transition metal. These compounds are used in a catalytic composition utilized in an olefin metathesis method.

Complexes and method for synthesis of group 6 organometallics, and use thereof in an olefin metathesis method

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Saint Genis Laval, France

Helene Olivier-Bourbigou