Centre National De La Recherche Scientifique

L'air Liquide, Societe Anonyme a Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude

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

Bruno Roux-Fouillet

Roger Guilard

Franck Denat

Henry Ledon

Gilles Lagrange

Robert J Corriu

Catherine Reye

Ahmad Mehdi

Stéphane Brandes

Gabriel Canard

Jean-Michel Barbe

Claude Chuit

Francois Jerome

Géraud Dubois

St&eacute;phane Brandes

G&eacute;raud Dubois

Rapha&euml;l Tripier

François Jerome

G&eacute;rard Dubois

Stephane Brandes

Geraud Dubois

Compounds of formula (I) are disclosed.  The tetrapyrole ring in formula (I) can be substituted with a metal cation (M); R, R, Rand Rseparately represent a hydrogen atom, a C1-4 alkyl or alkyloxy radical, or a phenyl radical optionally substituted by vinyl, hydroxy, nitro, amino, bromo, chloro, fluoro, iodo, benzyloxy, or hydroxymethyl radicals; R, R, Rand Rseparately represent a hydrogen atom or a C1-4 alkyl radical; R, Rand Rseparately represent a hydrogen atom, a C1-4 alkyl or alkyloxy radical optionally substituted by a halogen, or a phenyl radical optionally substituted by vinyl, hydroxy, nitro, amino, bromo, chloro, fluoro, iodo, benzyloxy, or hydroxymethyl radicals, wherein at least one of R, R, and Ris a phenyl radical. Compounds of formula (I) bound to a silica, a sol-gel material or a mesoporous silica are useful for selective trapping of carbon monoxide.

Materials for selective trapping of carbon monoxide

Silica gel incorporating polyazacycloalkane units comprising more than six nitrogen atoms, preparation process and use

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

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Dijon, France

Bruno Roux-Fouillet