Commissariat a L'energie Atomique

Centre National De La Recherche Scientifique

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Hervé Chollet

Roger Guilard

Panayotis Cocolios

Franck Denat

Philippe Guiberteau

Jean-Louis Babouhot

Henry Ledon

Frederic Boschetti

Michel Meyer

Jean-Charles Hubinois

Vincent Lavoine

Jean-Louis Babou

Frédéric Rascalou

Frédéric Barbette

Roger G{acute Over (u)}ilard

Material composed of a polyazacycloalkane grafted on polypropylene fibres. Process for the preparation of this material. Process for removing metal cations present in a liquid by bringing this liquid into contact with the said material.

Material comprising polyazacycloalkanes, grafted on polypropylene fibres, its process of preparation, and process for removing metal cations from a liquid

This system collects light emitted by at least one light source () and focuses it onto at least one light detection device (). Preferably, it comprises a first mirror () that collects light emitted by the source and focuses it on a second mirror () that focuses it in turn onto the device. The system is provided with a chamber that is opaque to all light, particularly ultraviolet radiation, and in which the light source, the light detection device and the mirrors are placed, and means of creating a vacuum in this chamber and filling it with a gas that is transparent to ultraviolet radiation.

Achromatic and absorption reducing light collecting system, particularly adapted to optical spectrometric analysis

The invention relates to a method of preparing nitrogen macrocycles having formula (I). The inventive method comprises a step involving the reaction of compounds (II) and (III) in order to form a compound having formula (IV). Said compound is subsequently made to react with a compound having formula (V) in order to form a compound having formula (VI). The latter compound is then subjected to an acid treatment 

Method of preparing nitrogen macrocycles

The invention is related to a method and an installation for removal of metal cations contained in a liquid, in which said liquid is brought into contact at a temperature greater than or equal to 60&#xb0; C. with a chelating ion exchange resin formed from a polyazacycloalkane grafted on a solid support, said resin having been conditioned, previously to said contacting, at a pH of 4 to 6.

Method and installation for removal of metal cations from a liquid by resins with polyazacycloalkanes grafted on a support

Polyazacycloalkanes, tri-, tetra- or penta-azamacrocyclic complexes, processes for the production of these substituted or unsubstituted polyazacycloalkanes grafted to a support and uses of polyazacycloalkanes and the aforementioned complexes

The invention relates to polyazacycloalkanes having 3, 4 or 5 nitrogen atoms, tri-, tetra- or penta-azamacrocyclic transition metal complexes and processes for the production of said polyazacycloalkanes. The object of the invention is to form polyazacycloalkanes able to trap metal cations and in particular U, Pu, Am, Ce, Eu, Al, Gd, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ag, Cd, Sn, Au, Mg or Pb or complexes able to trap in particular oxygen in a gaseous mixture. The invention more particularly applies to the treatment of liquid effluents from nuclear power stations.

Polyazacycloalkanes, tri-, tetra- or penta-azamacrocyclic complexes,

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Dijon, France

Hervé Chollet