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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.17 [2010] >
IJCT Vol.17(6) [November 2010] >
| Title: | Solvent extraction and separation of Mo(VI) and W(VI) from hydrochloric acid solutions using cyanex-923 as extractant |
| Authors: | Talla, R G
Gaikwad, S U
Pawar, S D |
| Keywords: | Solvent extraction
Molybdenum(VI)
Tungsten(VI)
Cyanex-923
Stripping
Separation |
| Issue Date: | Nov-2010 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | A systematic study of solvent extraction of
molybdenum(VI) and tungsten(VI) from hydrochloric acid media using neutral
phosphine oxide extractant, cyanex-923 in toluene has been performed. These
metal ions are quantitatively extracted with cyanex-923 in toluene in the
acidic range 5-7 M, and from the organic phase they are stripped
with 1.0 M NaOH. The effect of pH, equilibrium period, diluents, diverse ions
and stripping agent on the extraction of Mo(VI) and W(VI) has been studied. The
extraction reactions proceed by solvation and the probable extracted species in
the organic phase were MoO2Cl2.2Cyanex-923 and WO2Cl2.2Cyanex-923.
Based on these results a sequential procedure for their separation from each
other has been developed. |
| Page(s): | 436-440 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.17(6) [November 2010]
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