Centre National De La Recherche Scientifique

Rhone-poulenc Chimie

Universite Claude Bernard – Lyon1

L&prime;air Liquide-societe Anonyme a Directoire Et Conseil De Surveillance Pour L&prime;etude Et L&prime;exploitation Des Procedes Georges Claude

Universite De Montpellier II

Catherine Reye

Robert J Corriu

Ahmad Mehdi

Roger Guilard

Genevieve E Cerveau

Claude G Chuit

Henry Ledon

Stéphane Brandes

Chloé Thieuleux

Claude Chuit

Malika Boualleg

Jean-Marie Basset

Christophe Coperet

Franck Denat

Gilles Lagrange

Bruno Chaudret

Chloe Thieuleux

Bruno Roux-Fouillet

Yannick Guari

Laurent Veyre

André Maisonnat

Johan Alauzun

Alain Boudin

Genevieve Cerveau

Tarun Maishal

St&eacute;phane Brandes

Iyad Karame

G&eacute;rard Dubois

Jean-Michel Camus

Stephane Brandes

Susanna Jansat

Victor Matsura

Karine Philippot

Jordi Garcia-Anton

Florence Turpin

Iyad Ezzeddine Karame

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 concerns a method for preparing organic-inorganic hybrid materials with controlled porosity and functionality comprising hydrolysis and condensation polymerization of a compound of formula (I): Z-R&#x2014;Si(OR)(OR')(OR&#x2033;), with an alkaline or alkaline-earth silicate in a mol ratio of (I)/(silicate)=1:9, in the presence of a non-ionic surfactant, to form a mesoporous silica represented by Z-R&#x2014;SiO9 SiO, whereon is then anchored an organic compound, represented by (&#x394;)N&#x2014;H, comprising a &#x2014;NH&#x2014; group capable of reacting with Z, to form a functionalized mesoporous silica represented by (&#x394;)N&#x2014;R&#x2014;SiO9 SiO, which is optionally complexed with a metallic cation to form an organometallic complex. The invention also concerns the use of these materials to separate gases.

Mesoporous organic-inorganic hybrid materials for separating gases

The invention concerns a method for preparing organic-inorganic hybrid materials with controlled porosity and functionality comprising hydrolysis and condensation polymerization of a compound of formula (I): Z-R&#x2014;Si(OR)(OR')(OR&#x2033;), with an alkaline or alkaline-earth silicate in a mol ratio of (I)/(silicate)=1:9, in the presence of a non-ionic surfactant, to form a mesoporous silica represented by Z-R&#x2014;SiO9 SiO, whereon is then anchored an organic compound, represented by (&#x394;)N&#x2014;H, comprising a &#x2014;NH&#x2014; group capable of reacting with Z, to form a functionalized mesoporous silica represented by (&#x394;)N&#x2014;R&#x2014;SiO9 SiOwhich is optionally complexed with a metallic cation to form an organometallic complex. The invention also concerns the use of these materials to separate gases.

A novel compound which can be used in the field of separation and purification of gases is disclosed. The compound can be incorporated into a silica gel incorporating polyazacycloalkane structural units for separating a predetermined gas from a mixture of gases. The mixture of gases is brought into contact with a metallated hybrid gel under conditions which make possible the absorption of the gas to be separated, followed by a phase of desorption of the attached gas, and the recovery of the gas.

Silica gel incorporating polyazacycloalkane structural units

The present invention relates to new hexacoordinate silicon complexes, the process for their preparation and their application. These new complexes correspond to the general formula I: ##STR1## in which: A represents an alkali metal or alkaline earth metal except for magnesium, and

New hexacoordinate silicon complexes, the process for their preparation

Organgomagnesium complexes which correspond to the formula (I): ps

New organomagnesium complexes in solid form, process for their

A process for the preparation of hydrogenosilanes or halogenosilanes corresponding to the general formula I:

Process for the preparation of hydrogenosilanes or halogenosilanes

The present invention relates to new pentacoordinate silicon complexes, the process for their preparation and their application to the preparation of organosilanes. The pentacoordinate silicon complexes according to the invention correspond to the general formula I: ##STR1## in which: R denotes an alkyl, alkenyl, alkynyl, aryl, aralkyl, aralkenyl, aralkynyl or alkylaryl radical in which the aliphatic fragments are linear, branched or cyclic and contain from 1 to 20 carbon atoms,

Pentacoordinate silicon complexes, the process for their preparation and

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Montpellier, France

Catherine Reye