Ifp Energies Nouvelles

Institut Francais Du Pe'trole

Centre National De La Recherche Scientifique

Axens

Celanese Chemicals Europe Gmbh

Lionel Magna

Helene Olivier-Bourbigou

Lucien Saussine

Fabrice Lecomte

Renaud Cadours

Cécile Barrere-Tricca

David Proriol

Stephane Harry

Dominique Commereuc

Jean-Marie Basset

Natacha Touchais

Hélène Olivier-Bourbigou

Yves Chauvin

Virginie Kruger-Tissot

Gerald Niccolai

Fabien Grasset

Emmanuelle Guillon

Frederic Augier

Denis Uzio

Fabrice Diehl

Laurent Bournay

Pierre-Alain Breuil

Alexandre Vonner

Jerome Pigourier

Stephane Kressmann

Nicolas Cadran

Catherine Boutrot

Pedro Maximiano Raimundo

Olivia Martin

Emmanuel Pellier

Jean-Benoit Cazaux

Sebastien Drochon

Jérôme Pigourier

Frederic Favre

Loiec Rouleau

Adrien Boudier

Nicolas Janot

Xavier Liege

Etienne Niderkorn

Aurelie Camarata

Daniel-Jean Vinel

Daniel Jean Vinel

Cedrik Popelin

Sandrine Berard

Denis Jean Marie Guillaume

Gerald Peter Niccolai

Typhène Michel

Stéphane Harry

Hélène Olivier Bourbigou

The present invention relates to an oligomerization process implemented in a sequence of at least two gas/liquid reactors, placed in series, comprising at least one gas headspace recycle loop. The process more particularly relates to the oligomerization of ethylene to linear alpha-olefins such as 1-butene, 1-hexene, 1-octene or a mixture of linear alpha-olefins.

Oligomerization process implementing the recycling of the gas headspace

The invention describes a method for dimerization of ethylene implementing a step for treatment of raw effluent by neutralization, at the outlet of the reactor, of the catalyst for dimerization of ethylene into but-1-ene by a particular alcohol.

Method for dimerization of ethylene comprising a step for treatment of the reaction effluent

The invention concerns a process for the oligomerization of ethylene into alpha-olefins, comprising a step for the oligomerization of ethylene, a step for deactivation of the catalyst, a and step for separation of the products, the reactor being provided with a cooling loop () by means of which at least a portion of the reaction effluent is moved through at least two switchable heat exchangers, said heat exchangers being cleaned alternately by means of an integrated cleaning device.

Process for the oligomerization of olefins employing a cleaning device

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 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 process for oligomerization of olefins into compounds or into a mixture of compounds of general formula CHwith 4&#x2266;p&#x2266;80 that employs a catalytic composition that comprises at least one organometallic complex of an element of group IV that is selected from titanium, zirconium, and hafnium, wherein the organometallic complex contains at least one alkoxy-type ligand that is functionalized by a heteroatom selected from nitrogen, oxygen, phosphorus and sulfur, or by an aromatic group.

Process for oligomerization of olefins that uses a catalytic composition that comprises an organometallic complex that contains an alkoxy ligand that is functionalized by a heteroatom

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 process for oligomerization of the olefins into compounds or into a mixture of compounds of general formula CpH2p with 4&#x2266;p&#x2266;80 that implements a catalytic composition that comprises at least one organometallic complex of an element of group IV that is selected from among titanium, zirconium, or hafnium, whereby said organometallic complex contains at least one aryloxy-type (or phenyloxy-type) ligand that is functionalized by a heteroatom that is selected from among nitrogen, oxygen, phosphorus or sulfur or by an aromatic group.

Process for oligomerization of olefins that uses a catalytic composition that comprises an organometallic complex that contains a phenoxy ligand that is functionalized by a heteroatom

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

The invention describes a process for the selective dimerization of ethylene to but-1-ene using a catalytic composition comprising at least one organometallic titanium complex, said organometallic complex containing at least one alkoxy type ligand functionalized by a heteroatom selected from nitrogen, oxygen, phosphorus, sulphur, arsenic and antimony or by an aromatic group.

Process for dimerization of ethylene to but-1-ene using a composition comprising a titanium-based complex and an alkoxy ligand functionalized by a heteroatom

New 1,2,3- or 1,2,3,4- or 1,2,3,4,5- substituted imidazolium salts and their uses as solvent in catalyzed organic reactions, as well as compositions containing them and a transition metal compound. They can be used in the following reactions: the telomerisation of conjugated dienes, dimerisation of olefins, the oligomerisation of olefins, polymerization of olefins, alkylation of olefins, hydrogenation of olefins, olefin metathesis, hydroformylation of olefins, ring-closing metathesis of olefins, ring-opening metathesis polymerisation of olefins, symetric or asymetric epoxidation of olefins (including heteroatom substituted olefins) and the cyclopropanation of olefins, condensation reaction, hydrogenation reaction, isomerization reaction, Suzuki cross-coupling reactions, amination reaction, partial oxidation of alkancs, kinetic resolution of racemic mixtures, hydrogenation of imines, hydrogenation of ketones, transfer hydrogenation and hydroxylation of aromatic organic compounds.

Imidazolium salts and their use of these ionic liquids as a solvent

In a method for hydroformylating olefinically unsaturated compounds by means of a cobalt-based catalyst, used in a non-aqueous ionic liquid, liquid at a temperature below 100&#xb0; C. and comprising at least one cation Qand at least one anion A, said method comprising at least a stage of reaction under pressure and at least a stage of separation of the phases by decantation, recycling of the catalyst is improved: At the end of this process, the organic phase containing the reaction products can be recovered and the ionic liquid phase containing the catalyst can be recycled to the hydroformylation reactor.

Hydroformylation method involving a cobalt-based catalyst in a non-aqueous ionic liquid

The method enables the antihydrate compounds contained in a condensed-hydrocarbon liquid feedstock arriving through pipeto be extracted. The liquid feedstock is brought into contact, in zone ZA, with a non-aqueous ionic liquid having the general formula QA, where Qdesignates an ammonium, phosphonium, and/or sulfonium cation, and Adesignates an anion able to form a liquid salt. The antihydrate compounds in the liquid hydrocarbon feedstock evacuated through pipeare eliminated. The ionic liquid charged with antihydrate compounds is evacuated through pipe, then introduced into evaporator DE to be heated in order to evaporate the antihydrate compounds. The regenerated ionic liquid is recycled through pipesandto zone ZA. The antihydrates are evacuated through pipe

Method for extracting an antihydrate contained in condensed hydrocarbons

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Lyons, France

Lionel Magna