CCCC 2006, Volume 71, Issue 10, Abstracts pp. 1427-1444

Collection
of Czechoslovak Chemical Communications

Abstracts: 2006, 71(10), 1427-1444; doi:10.1135/cccc20061427

Previous/Next Abstract

COMPLEXING AND EXTRACTION PROPERTIES OF TRIETHYLENE GLYCOL BIS(DODECYL PHOSPHATE)

Vera NOVOMESTSKA^a, Jiri PRIHODA^a,* and Eckhard HERRMANN^b
^a Department of Inorganic Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, CZ-61137 Brno, Czech Republic
^b University of Applied Sciences Dresden, Friedrich-List-Platz 1, D-01069 Dresden, Germany

The extraction of Mg(II), Ca(II), Sr(II), Ba(II), Mn(II), Co(II), Ni(II), Cu(II), Eu(III) and Am(III) from mineral acid solutions with triethylene glycol bis(dodecyl phosphate) (H₂A = HO(H₂₅C₁₂O)P(O)(OCH₂CH₂)₃OP(O)(OC₁₂H₂₅)OH) in different diluents was investigated. The formation of complexes was followed by NMR spectrometry; their composition in the organic phase was determined by slope analysis and proved by MALDI-TOF mass spectrometry. M^II(HA)₂ and M^III(HA)A species are formed in the organic phase while M^z+(H_2m-zA_m^z-)· nOcOH species (m = 2 or 3; n = 0, 1, 2; z = 2 or 3) in (octan-1-ol)-containing diluents.
Keywords: Phosphates; Ethylene glycols; Divalent metal cations; Complexing agents; Extraction agents; Liquid-liquid extraction.

Full text with crosslinked references (507 KB)