The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 2022
Filed:
Nov. 13, 2017
Centre National DE LA Recherche Scientifique, Paris, FR;
Institut Polytechnique DE Grenoble, Grenoble, FR;
Université Savoie Mont Blanc, Chambery, FR;
Universidade DE Aveiro, Aveiro, PT;
Nicolas Papaiconomou, Nice, FR;
Joao Manuel Da Costa E Araujo Pereira Coutinho, Ilhavo, PT;
Matthieu Gras, Corenc, FR;
Isabelle Billard, Grenoble, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris, FR;
INSTITUT POLYTECHNIQUE DE GRENOBLE, Grenoble, FR;
UNIVERSIDADE DE AVEIRO, Aveiro, PT;
UNIVERSITÉ SAVOIE MONT BLANC, Chambery, FR;
Abstract
Disclosed is a process for extracting or separating metal ions using a composition including: an ionic liquid of formula C,−X, in which: Cis an onium cation including at least one hydrocarbon chain Rincluding from 6 to 20 carbon atoms; X− is an anion of charge p, the ionic liquid having a solubility in water at 20° C. of at least 10 g/l; an acid; and water. The composition includes two liquid phases: a phase enriched in ionic liquid ϕ; and a phase enriched in water ϕ, the pH of which is less than or equal to 4.7. The composition is useful for extracting a metal ion from an acidic aqueous medium including a metal ion, for separating metal ions from an aqueous medium including at least two metal ions or for purifying an acidic aqueous solution including a metal ion.