Nanocomposite solid material based on hexa- and octa-cyanometallates, method for the preparation thereof and method for fixing mineral pollutants using said material

US9786398B2 · kind B2 · utility

Assignees

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR
• CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE · FR
• Universite De Montpellier · FR

Inventors

• Agnès Grandjean · Saint-Marcel-de-Careiret, FR
• Yves Barre · Orange, FR
• Yannick Guari · Prades-le-Lez, FR
• Joulia Larionova · Alice Street, FR
• Christian Guerin · Grabels, FR

Key dates

• Filing date: May 20, 2010
• Grant date: Oct 10, 2017
• Expiry date: Dec 1, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C11/005
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A nanocomposite solid material includes nanoparticles of a metal coordination polymer with CN ligands comprising Mn+ cations, in which M is a transition metal and n is 2 or 3; and anions [M′(CN)m]x− in which M′ is a transition metal, x is 3 or 4, and m is 6 or 8. The Mn+ cations of the coordination polymer are bound through an organometallic bond to an organic group of an organic graft chemically attached inside the pores of a support made of porous glass. The material can be used in a method for fixing (binding) a mineral pollutant, such as radioactive cesium, contained in a solution by bringing the solution in contact with the nanocomposite solid material.