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J Hazard Mater. 2009 Dec 15;172(1):129-37. doi: 10.1016/j.jhazmat.2009.06.154. Epub 2009 Jul 4.

Synthesis and characterization of zirconium titanium phosphate and its application in separation of metal ions.

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Applied Chemistry Department, Faculty of Technology and Engineering, The M.S. University of Baroda, Vadodara 390001, Gujarat, India.


An advanced inorganic ion exchanger, zirconium titanium phosphate (ZTP) of the class of tetravalent bimetallic acid (TBMA) salt has been synthesized by sol-gel route. ZTP has been characterized for ICP-AES, TGA, FTIR and XRD. Chemical stability of the material in various media-acids, bases and organic solvents has been assessed. Cation exchange capacity (CEC) and effect of calcination (100-500 degrees C) on CEC has also been studied. Distribution behaviour of metal ions Co2+, Ni2+, Cu2+, Zn2+ (d-block), Cd2+, Hg2+, Pb2+, Bi3+ (heavy) and La3+, Ce3+, Th4+, UO(2)2+ (f-block) towards ZTP has been studied and distribution coefficient (K(d)) determined in aqueous as well as various electrolyte media/concentrations. Based on the differential selectivity, breakthrough capacity (BTC) and elution behaviour of various metal ions towards ZTP, a few binary and ternary metal ion separations have been carried out.

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