Centre National De La Recherche Scientifique

Uop Lcc

Institut Francais Du Pe'trole

Bp Chemicals Limited

Basf Aktiengesellschaft

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Institute Francais Du Petrole

Ifp Energies Nouvelles

Societe Nationale Elf Aquitaine

Universite Claude Bernard – Lyon1

Rhone-Poulenc Specialites Chimiques

Celanese Chemicals Europe Gmbh

Elf Aquitaine

Bp Oil International Limited

Université Claude Bernard Lyon I

Jean-Marie Basset

Mostafa Taoufik

Christophe Coperet

Jean Thivolle-Cazat

Christopher P Nicholas

Jean-Pierre Candy

Etienne Mazoyer

Eric Benazzi

Blaise Didillon

Fabienne Le Peltier

Barry Martin Maunders

Yves Chauvin

Paul T Barger

Christine Travers

Jean-Francois Joly

Jean-Paul Boitiaux

Lionel Magna

Simon Deleonibus

Jean Ollivier

Gilles Marchand

Michel Leconte

Ekkehard Schwab

Gerard Paul Hotier

Malika Boualleg

James E Rekoske

Michael Schulz

Christophe Nedez

Patrick Sarrazin

Anne-Claire Dubreuil

Jacques Bousquet

Cecile Thomazeau

Olivier Clause

Christophe Vallee

Lars Fischer

Jean-Christophe Galland

Dominic Vanoppen

Catherine Reye

Robert J Corriu

Jean-Richard Llinas

Agnes Choplin

Gerald Niccolai

Thibaut Gutel

Catherine Santini

Paul-Henri Haumesser

Albert Theolier

Paul Campbell

Erwan Le Roux

Laurent Lefort

Olivier Maury

Guillaume Saggio

Robert Mutin

Ahmad Mehdi

Daravong Soulivong

Philippe Bres

Francoise Quignard

Chloe Thieuleux

Veronique Dufaud

Arthur Höhn

Laurent Veyre

Mathieu Chabanas

Mostapha Taoufik

Tarun Maishal

Jean-Luc Couturier

Iyad Karame

Katsumi Tanaka

Christine Lucas

Jean-Michel Camus

Johan Alauzun

Layane Deghedi

V&eacute;ronique Vidal

Fatima Bentahar

Aimery De Mallman

Damien Meunier

Arnaud Piechaczyk

Francois Stoffelbach

Christine Valerio

Gregory Dard

Gerald Peter Niccolai

Iyad Ezzeddine Karame

A process for the metathesis of olefins has been developed. The process comprises contacting a hydrocarbon feedstock with a catalyst at metathesis conditions. The catalyst comprises a tungsten compound, which contains at least one tungsten-fluoro bond, dispersed or grafted onto a support. A specific example of the catalyst is the compound WOF(CHCMe)grafted onto a silica support. The feedstock comprises a first and a second olefin wherein the second olefin has a carbon number of at least two greater than the first olefin and the product is an olefin with a carbon number intermediate between the first and second olefin. Specifically the process produces propylene from ethylene and butylene.

Olefin metathesis process using a catalyst containing tungsten fluorine bonds

A catalyst for the metathesis of olefins in general and specifically for the production of propylene from ethylene and butylene has been developed. The catalyst comprises a tungsten metal compound, which contains at least one tungsten-fluoro bond, dispersed or grafted onto a support. A specific example of the catalyst is the compound WOF(CHCMe)grafted onto a silica support.

Olefin metathesis catalyst containing tungsten fluorine bonds

The present invention relates to materials and particularly 'organometallic-organic-inorganic hybrid materials' that can be used as heterogeneous catalysts for selective catalytic reactions. More precisely this invention relates to organic-inorganic hybrid nanostructured materials comprising a regularly distributed stabilized carbene that binds strongly to a metal so as to form a stable organometallic-organic-inorganic hybrid material having high catalytic performances.

Hybrid organic-inorganic materials that contain stabilized carbene

Processes for the conversion, under conditions and with a catalyst system effective for olefin metathesis, of hydrocarbon feedstocks comprising an acyclic symmetrical olefin (e.g., butene-2) are described. Olefin products of lower and higher carbon numbers (e.g., propylene and pentene) are formed in the presence of a catalyst comprising a solid support and a tungsten hydride bonded to alumina present in the support. This occurs despite the olefin metathesis reaction mechanism leading to a degenerative result, without any expected production of different carbon number products from acyclic symmetrical olefins.

Conversion of acyclic symmetrical olefins to higher and lower carbon number olefin products

Processes for the conversion, under conditions and with a catalyst system effective for olefin metathesis, of hydrocarbon feedstocks comprising butylene, for example all or a large proportion of a single Colefin isomer such as butene-1, are described. Olefin products, and particularly propylene, are formed in the presence of a catalyst comprising a solid support and a tungsten hydride bonded to alumina present in the support. This occurs despite the expectation that the olefin metathesis reaction mechanism leads to the formation of olefin products having other carbon numbers.

Conversion of butylene to propylene under olefin metathesis conditions

A process is described for preparing a catalyst comprising at least one porous support and at least one metallic phase containing nickel and tin in a proportion such that the Sn/Ni molar ratio is in the range 0.01 to 0.2, said process comprising at least the following steps in succession:

Process for preparing a Ni/Sn supported catalyst for the selective hydrogenation of polyunsaturated hydrocarbons

A method for making electrical interconnections of carbon nanotubes, including a) depositing an ionic liquid including nanoparticles of at least one suspended electrically conducting material, covering at least one surface of an element configured to be used as a support for carbon nanotubes, b) forming a deposit of the nanoparticles at least against the surface of the element, c) removing the remaining ionic liquid, d) growing carbon nanotubes from the deposited nanoparticles, and further including between the c) removing the remaining ionic liquid and the d) growing carbon nanotubes, passivating the deposited nanoparticles not found against the surface of the element.

Method for making electrical interconnections with carbon nanotubes

A method for producing a memory device with nanoparticles, including steps of: a) forming, in a substrate based on at least one semi-conductor, source and drain regions, and at least one first dielectric on at least one zone of the substrate arranged between the source and drain regions and intended to form a channel of the memory device, b) depositing of at least one ionic liquid that is an organic salt or mixture of organic salts in a liquid state, wherein nanoparticles of at least one electrically conductive material are suspended in the ionic liquid, said ionic liquid covering at least said first dielectric, c) forming a deposition of said nanoparticles at least on said first dielectric, d) removing the ionic liquid remaining on the first dielectric, and e) forming at least one second dielectric and at least one control gate on at least one part of the nanoparticles deposited on the first dielectric.

Method for producing a conductive nanoparticle memory device

Processes for olefin metathesis, for example for the production of propylene, utilize a catalyst comprising a solid support and a tungsten hydride bonded to alumina present in the support. Conversion, selectivity, and/or catalyst stability advantages may be realized when a first olefin reactant (e.g., ethylene) is present in the hydrocarbon feedstock at a stoichiometric deficit relative to a second, higher carbon number olefin reactant (e.g., butylene).

Olefin metathesis reactant ratios used with tungsten hydride catalysts

The present invention relates to the manufacture of nitrile compounds from unsaturated organic compounds by reaction with hydrogen cyanide. It relates more particularly to the manufacture of nitrile compounds of use in the synthesis of adiponitrile, an important chemical intermediate in the manufacture of major chemical compounds, such as hexamethylenediamine and &#x3b5;-caprolactam. The invention provides a process for the manufacture of organic compounds comprising at least one nitrile functional group by carrying out a hydrocyanation reaction between hydrogen cyanide and an organic compound comprising at least one ethylenic unsaturation. This reaction is carried out in the presence of a catalytic system comprising a metal element chosen from the group consisting of nickel, platinum and palladium and an organophosphorus ligand, the reaction medium additionally comprising an ionic liquid in the liquid state at least at the temperature at which the hydrocyanation reaction is carried out.

Method of producing nitrile compounds

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

The invention relates to a method for converting ethylene into propylene consisting in reacting said ethylene with a supported metal compound comprising an aluminium oxide based support to which a tungsten hydride is grafted. Said reaction is carried out at a temperature ranging from 20 to 600&#xb0; C., preferably between 50 and 350&#xb0; C., at an absolute pressure ranging from 0.01 to 8 MPa, preferably between 0.01 and 1 MPa. A catalyst is regeneratable by introducing hydrogen at a temperature of 50-300&#xb0; C.

Method for converting ethylene into propylene

The invention relates to a method for metathesis of one or several reagents comprising a linear or branched hydrocarbon chain containing a double olefinic bond Csp&#x2550;Cspconsisting in reacting said reagent or reagents with a supported metal compound comprising an aluminum oxide-based support to which a tungsten hydride is grafted. Typically, each said reagent or reagents comprises from 2 to 30 carbon atoms. The reagent can be embodied in the form of olefin. The inventive method can be used, for example for producing propylene from ethylene and butane.

Method for metathesis of compounds comprising an olefinic double bond, in particular olefins

The invention relates to a process for producing ethane comprising contacting methane with a metal catalyst selected from metal hydrides, metal organic compounds and mixtures thereof. It also relates to a process for the conversion of methane to carbon-containing products comprising contacting methane with a metal catalyst comprising at least one metal, Me, chosen from the lanthanides, the actinides and the metals from Groups 2 to 12 of the Periodic Table of the Elements, so as to produce ethane in a proportion of at least 65%, especially at least 98% or 99% by weight with respect to carbon-containing products formed in the process. The process can be a single-step process, preferably carried out under conditions involving a non-oxidative catalytic coupling of methane, in particular under operating conditions maintained substantially constant, preferably continuously, during the ethane production, e.g. at a temperature ranging from &#x2212;30&#xb0; C. to +80&#xb0; C., preferably from 20&#xb0; C. to 500&#xb0; C., under a total absolute pressure ranging from 10to 100 MPa, preferably from 0.1 to 50 MPa. The metal catalyst may be chosen from metal catalysts supported on and preferably grafted to a solid support. One of the main advantages of the present invention is to produce ethane with a very high selectivity.

Process for converting methane into ethane

Method for the elimination of metal ions from aqueous media, such as zinc, lead, chrome, copper, iron, aluminium, manganese, cadmium, cerium or silver and mixtures of the metals present in a trace or ultratrace state in aqueous effluents, by adsorption on a solid charge containing a metal chosen from group VIII.

Elimination of metal ions from aqueous effluents

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Caluire, France

Jean-Marie Basset