✦ LIBER ✦

Application of ligands with sulphonic groups to the separation of metal ions on strongly basic anion exchangers

✍ Scribed by Krystyna Brajter

Publisher: Elsevier Science
Year: 1974
Tongue: English
Weight: 386 KB
Volume: 102
Category: Article
ISSN: 1873-3778
DOI: 10.1016/s0021-9673(01)85469-8

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✦ Synopsis

SlJMMARY

The possibility of using bromopyrogallol red, chromotropic acid and alizarin red S as complexing agents for the selective separation of Ti and Zr from the other metal ions was investigated.

Bromopyrogallol red was used for the separation of titanium(JV) from Co(II), Cu(lI), Cr(IIl) and Fe(lII), chromotropic acid for the separation of titanium from Ni, Cu and Fe, and alizarin red S for the separation of zirconium from Cu, Ni and Al.

Using chromotropic acid it is possible to separate titanium(IV) from large excess of metal ions giving weak complexes.

By elution of metal ions which formed less stable complexes with the complexing agent no evidence of ligand in the eluate was discovered. This proves that very strong binding of ligand on anion-exchange resin occurs. It was found that for separation of Ti, chromotropic acid is more suitable than bromopyrogallol red.

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