Bis(Diphenylcarbamoylmethylphosphine Oxide) Ligand Containing 4, 7, 10 – Trioxatridecane Spacer: Novel Effective Extractant for Actinides and Lanthanides. Issue 1 (2nd January 2016)

• Record Type: Journal Article
• Authors: Turanov, А. N.; Karandashev, V. K.; Sharova, E. V.; Аrtyushin, О. I.
• Is Part Of: Solvent extraction and ion exchange. Volume 34:Issue 1(2016)
• Page Start: 26
• Page End: 36
• Publication Date: 2016-01-02
• Subjects: Extraction -- uranium(VI) -- thorium(IV) -- lanthanides(III) -- carbamoylmethylphosphine oxides; Solvent extraction -- Periodicals; Ion exchange -- Periodicals; 660.284248
• DOI: 10.1080/07366299.2015.1129197
• Languages: English
• ISSNs: 0736-6299

Abstract

ABSTRACT: A novel polydentate neutral organophosphorus ligand1 containing two Ph2 P(O)CH2 C(O)NH- bidentate moieties connected by a 4, 7, 10 - trioxatridecane spacer through amide nitrogen atoms was synthesized and studied as an extractant for U(VI), Th(IV), and lanthanides(III) ions from HNO3 solutions. The influence of aqueous and organic phases on the extraction efficiency was elucidated and stoichiometry of the complexes extracted was determined. Bis-CMPO ligand1 was found to possess a higher extraction efficiency towards U(VI), Th(IV), and lanthanides(III) ions than its mono analog diphenylphosphorylacetic acid N -nonylamide5 and bis-CMPO ligands containing a di- and a triethylene glycol spacers. The values of DU, DTh, and DLn for compound1 are more than two orders of magnitude higher than those for its mono-CMPO analog5 .