Solid nanocomposite material based on hexa- or octacyanometallates of alkali metals, method for preparing same, and method for extracting metal cations
US11264143B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 6, 2017 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | May 16, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Solid nanocomposite material comprising nanoparticles of a hexacyanometallate or octacyanometallate of an alkali metal and of a transition metal, of formula [Alk+x]Mn+[M′(CN)m]z− in which Alk is an alkali metal, x is 1 or 2, M is a transition metal, n is 2 or 3, M′ is a transition metal, m is 6 or 8, z is 3 or 4, attached to at least one surface of a porous inorganic solid support, in which the nanoparticles are attached by adsorption to the at least one surface of the solid support, and in which the surface is a basic surface. Method for preparing this material. Method for extracting at least one metal cation from a liquid medium containing it, wherein the liquid medium is brought into contact with the material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.