Functional Role of Amorphous Silica in the Composite
Based on Titanium Phosphate Ion Exchanger

M. V. Maslova*, L. G. Gerasimova**, and R. F. Okhrimenko

Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center,
Russian Academy of Sciences, ul. Fersmana 26a, Apatity, Murmansk region, 184209 Russia

*e-mail: maslova@chemy.kolasc.net.ru

**e-mail: gerasimova@chemy.kolasc.net.ru

Received July 2, 2010

Abstract—The influence of the nature of a silicon-containing component used in synthesis of the composite
based on titanium phosphate on its composition and sorption properties has been studied using physicochemical
methods of analysis. The relationship between the structural modifications of the silicon-containing phase
formed in a solution of titanium(IV) sulfate and the sorption properties of the composite ion exchanger thus
obtained has been established. It has been shown that the presence of amorphous silica in the composite sorbent
favors an increase in its sorption capacity with respect to nickel cations, which is due to the adsorption processes
occurring on the surface of the active dopant.

Keywords: titanium phosphate, sorption, silica, nepheline concentrate, liquid glass

DOI: 10.1134/S1087659611010081

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