Phosphorours dendrimers, preparation method thereof and use of same for the extraction of actinides and lanthanides
AssigneeCommissariat A L' Energie Atomique
InventorsJean-Francois Dozol, Christian Schmidt, Pingshan Wang, Volker Bohmer
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Abstract
The invention relates to novel phosphorus-containing dendrimers having a core, at least one generation and an external layer consisting, completely or partly, of identical or different units, the said units satisfying the following formula (I): in which R1 and R2, which may be identical or different, are alkyl, alkoxy or aryl groups. These dendrimers are used for extracting actinides and lanthanides from aqueous solutions containing them.
Claims16
Phosphorus-containing dendrimer comprising a core, at least one generation and an external layer consisting, completely or partly, of identical or different units, the said units satisfying the following formula (I):
- in which R1 and R2, which may be identical or different, are alkyl, alkoxy or aryl groups.
Method for extracting at least one metal chosen from actinides and/or lanthanides present in an aqueous solution, the said method comprising, in succession, a step of bringing the aqueous solution into contact with at least one phosphorus-containing dendrimer having an external layer consisting, completely or partly, of identical or different units, the said units satisfying the following formula (I):
- in which R1 and R2, which may be identical or different, are alkyl, alkoxy or aryl groups, followed by a separation step so as to separate the dendrimer or dendrimers that has or have trapped the metal(s) of the aqueous solution.
Dependencies are inferred from the claim text.