Ion exchange of cobalt ions by ets-4 and ets-10 microporous titanosilicates

Claudiu Constantin Pavel1, Pierantonio De Luca2, Nicolae Bilba1, Alfonso Nastro2

1 Al. I. Cuza University of Iasi, Faculty of Chemistry, Department of Chemical Technology and Materials Chemistry, 11 Carol I Bd., 700506 Iasi, Romania,
2 University of Calabria, Department of Pianificazione Territoriale, 87036 Arcavacata di Rende (Cs), Italy

Abstract


Ion exchange experiments were carried out for the removal from aqueous solution of cobalt ions by an Engelhard Titanium Silicates 4 and 10 synthesized from alkaline gels. Selectivity factors were estimated by the construction of ion exchange and Langmuir isotherms and determination of thermodynamic values. It is shown that ETS-10 have a better affinity for Co uptake.

Keywords


ion exchange; cobalt; titanosilicates; ETS-4; ETS-10

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