APPLICATION OF MONOALKYL METHANEPHOSPHONATES TO EXTRACTION OF SELECTED METALS

Authors
TOKAROVA A NAVRATIL O SLADEK P
Citation
A. Tokarova et al., APPLICATION OF MONOALKYL METHANEPHOSPHONATES TO EXTRACTION OF SELECTED METALS, Collection of Czechoslovak Chemical Communications, 61(8), 1996, pp. 1177-1181
Citations number
5
Categorie Soggetti
Chemistry
Journal title
Collection of Czechoslovak Chemical Communications → ACNP
ISSN journal
00100765
Volume
61
Issue
8
Year of publication
1996
Pages
1177 - 1181
Database
ISI
SICI code
0010-0765(1996)61:8<1177:AOMMTE>2.0.ZU;2-0
Abstract
The distribution of scandium and hafnium between 0.1 or 1.0 mol l(-1) HNO3 and solutions of mono-alkyl methanephosphonates (HA; alkyl = meth yl, propyl, butyl, isobutyl, pentyl, 2-methylbutyl, cyclohexyl, 1,2,2- trimethylpropyl) in chloroform and 1,1,2,2-tetrachloroethane has been studied. The organic solvents mentioned allow to obtain the optimum va lues of partition coefficients of the two metals. The corresponding ex traction constants of the ScA(3)(HA)(x) and Hf(NO3)(4)(HA)(4) complexe s have been calculated.