Bp Chemicals Limited

Ximo Ag

Ifp Energies Nouvelles

Universite Claude Bernard – Lyon1

Other

Basf Aktiengesellschaft

Centre National De La Recherche Scientifique

Eth Zurich

Université´ D'aix-Marseille

Bruker Biospin Gmbh

Ecole Normale Superieure De Lyon

Cpe Lyon Formation Continue Et Recherche-cpe Lyon Fcr

Cpe Lyon Formation Continue Et Et Recherche Cpe Lyon Fcr

Christophe Coperet

Jean-Marie Basset

Jean Thivolle-Cazat

Mostafa Taoufik

Barry Martin Maunders

Victor Mougel

Audrey Bonduelle

Georg Emil Frater

Pascal Raybaud

Jeno Varga

Thibault Alphazan

Christele Legens

Guillaume Saggio

Olivier Maury

Laurent Lefort

Erwan Le Roux

John Glenn Sunley

Malika Boualleg

Paul Tordo

Olivier Ouari

Robert J Corriu

Catherine Reye

Florian Toth

Daravong Soulivong

Ahmad Mehdi

Philippe Bres

Melanie Rosay

Chloe Thieuleux

Csaba Hegedus

Emmanuel Robe

Laurent Veyre

Gilles Casano

Fabien Aussenac

Mathieu Chabanas

Matthew P Conley

Richard Pardy

Anne Lesage

Aaron Rossini

Lyndon Emsley

Johan Alauzun

Jean-Michel Camus

Iyad Karame

Tarun Maishal

Alexandre Zagdoun

Margherita Puccino

Michael Buchmeiser

Roman Schowner

Chloé Thieuleux

Iyad Ezzeddine Karame

The present invention relates to a dinitroxide biradical compound of general formula (I): In formula (I), A is a carbon, an ammonium, or a phosphonium; each of A1 to A6 is a single bond, O, N, N(O), S, S(O), SO, C(O), or a (C1-C4) alkyl chain; and Z1 and Z2 are selected from R1 and R2 in combination, so that there is always at least one R2 group that is substituted with R3 group. In Z1 and Z2, R1 is an H, an aryl, or a heteroaryl; R2 is an alkyl chain, an alkenyl chain, an alkynyl chain, a cycloalkyl, a heterocycloalkyl, an aryl, or a heteroaryl; and R3 is an alkyl chain, an alkenyl chain, an alkynyl chain, a cycloalkyl, a heterocycloalkyl, an aryl, a heteroaryl, an ether, an ester, or an azide. When Z1 and Z2 are combined together with the same carbon atom of the nitroxide ring to which they are bonded, they form a spirocycloalkyl or a spiroheterocycloalkyl, the spirocycloalkyl or the spiroheterocycloalkyl being substituted with R3.

Rigid dinitroxide biradical compounds used as improved polarizing agents for dynamic nuclear polarization techniques

The invention relates to immobilized metal alkylidene catalysts. The catalysts are useful in olefin metathesis. 

Immobilized metal alkylidene catalysts and use thereof in olefin metathesis

Method of making an immobilized tungsten catalyst comprising or consisting of (&#x2261;SiO)W(&#x2550;O)(&#x2550;CRR)(Ror R)(L), comprising at least the following step (i): (i) reacting silica (Si02) with a tungsten oxo alkylidene complex comprising or consisting of (R)(R)W(&#x2550;O)(&#x2550;CRR)(L), preferably wherein &#x2550;CRRis selected from &#x2550;CHC(CH)or &#x2550;CH(C(CH))CHand Rand Rare independently selected from pyrrol-1-yl, 2,5-dimethylpyrrol-1-yl, or 2,5-diphenylpyrrol-1-yl, or &#x2014;OR, wherein R is a six membered or 10 membered aryl ring, optionally substituted.

Immobilized metathesis tungsten oxo alkylidene catalysts and use thereof in olefin metathesis

Method of forming an olefin from a first olefin and a second olefin in a metathesis reaction, comprising step (i): (i) reacting the first olefin with the second olefin in the presence of a silica supported Mo- or W-alkylidene catalyst, wherein the first olefin and the second olefin are different from one another.

Use of immobilized molybdenum- and tungsten-containing catalysts in olefin cross metathesis

The invention concerns a process for the preparation of a catalyst for carrying out hydrogenation reactions in hydrotreatment and hydrocracking processes. Said catalyst is prepared from at least one mononuclear precursor based on molybdenum (Mo), in its monomeric or dimeric form, having at least one Mo&#x2550;O or Mo&#x2014;OR bond or at least one Mo&#x2550;S or Mo&#x2014;SR bond where [R=CHwhere x&#x2267;1 and (x&#x2212;1)&#x2266;y&#x2266;(2x+1) or R=Si(OR')or R=Si(R&#x2032;)where R&#x2032;=CHwhere x&#x2032;&#x2267;1 and (x&#x2032;&#x2212;1)&#x2266;y&#x2032;&#x2266;(2x&#x2032;+1)], and optionally from at least one promoter element from group VIII. Said precursors are deposited onto an oxide support which is suitable for the process in which it is used, said catalyst being dried at a temperature of less than 200&#xb0; C. then advantageously being sulphurized before being deployed in said process.

Process for the preparation of a catalyst based on molybdenum for use in hydrotreatment or in hydrocracking

The invention concerns a process for the preparation of a catalyst based on tungsten intended for hydrotreatment or hydrocracking processes. The invention concerns a process for the preparation of a catalyst for carrying out hydrogenation reactions in hydrotreatment and hydrocracking processes. Said catalyst is prepared from at least one mononuclear precursor compound based on tungsten (W), in its monomeric or dimeric form, having at least one W&#x2550;O or W&#x2014;OR bond or at least one W&#x2550;S or W&#x2014;SR bond where [R&#x2550;CHwhere x&#x2267;1 and (x&#x2212;1)&#x2266;y&#x2266;(2x+1) or R&#x2550;Si(OR')or R&#x2550;Si(R&#x2032;)where R&#x2032;&#x2550;CHwhere x&#x2032;&#x2267;1 and (x&#x2032;&#x2212;1)&#x2266;y&#x2032;&#x2266;(2x&#x2032;+1)], optionally at least one Mo precursor and optionally at least one promoter element from group VIII. Said precursors are deposited onto an oxide support which is suitable for the process in which it is used, said catalyst advantageously being sulphurized before being deployed in said process.

Process for the preparation of a catalyst based on tungsten for use in hydrotreatment or in hydrocracking

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

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

The present invention relates to a process for the manufacture of alkanes comprising a catalytic reaction resulting from contacting methane with at least one other starting alkane (I) in the presence of a metal compound (C) capable of catalysing a reaction for the splitting and/or recombination of a carbon-carbon bond and/or of a carbon-hydrogen bond and/or of a carbon-metal bond, which catalytic reaction results in the formation of at least one final alkane (II) having a number of carbon atoms equal to or greater than (2). In the process, the contacting operation is carried out under a methane partial pressure equal to or greater than 0.1 MPa, preferably in the range from 0.1 to 100 MPa. The metal compound (C) can be chosen from metal compounds supported on and dispersed over a solid support, metal compounds supported on and grafted to a solid support and non-supported metal compounds. Under these conditions, it was found that the yield of the catalytic reaction was improved, and that the catalytic stability and activity of the metal compound (C) over timer were greatly enhanced.

Process for manufacturing alkanes by reacting other alkanes with methane

The present invention relates to a novel, heterogeneous catalyst which is suitable, in particular, for olefin metathesis. This catalyst is immobilized on an inorganic support and contains at least one active rhenium compound containing at least one carbene group and, if desired, further functional groups. The rhenium compound is bonded to the material used as support by a chemical bond.

Catalyst fixed on a carrier and used for the metathesis of olefins

The present invention relates to a process for manufacturing alkanes, comprising, as main stage, a reaction resulting from bringing methane into contact with at least one other starting alkane (A) in the presence of a catalyst based on a metal M capable of catalyzing a metathesis of alkanes. The reaction results in the formation of at least one or two final alkanes (B) having a number of carbon atoms less than or equal to that of the starting alkane (A) and at least equal to 2. Preferably the catalyst comprises a hydride of a metal M grafted to and dispersed over a solid support. The metal M may be chosen from transition metals, lanthanides and actinides. The present invention also relates to the use of a catalyst capable of catalyzing a metathesis of alkanes in 3 reaction resulting from bringing methane into contact with at least one other starting alkane (A).

Process for manufacturing alkanes with methane

A process for the manufacture of alkanes comprising a cross-metathesis reaction between at least one starting alkane (A) and one organometallic compound (B) fixed to an inorganic support and comprising a metal bonded to at least one hydrocarbon-comprising radical. The reaction leads to the formation of at least one other alkane (C) which is a higher or lower homologue of the starting alkane (A), by cleavage of the hydrocarbon-comprising radical with the metal of the organometallic compound (B) and recombination of the radical with at least one other radical originating from a cleavage of the starting alkane (A). The metal of the compound (B) preferably is selected from transition metals, lanthanides and actinides, and the hydrocarbon-comprising radical of the compound (B) preferably is selected from alkyl, alkylidene and alkylidyne radicals.

Process for manufacturing alkanes

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Lyons, France

Christophe Coperet