title: Synthesis and characterization of zirconium titanium phosphate and its application in separation of metal ions.
abstract: 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.
authors.affiliation: Applied Chemistry Department, Faculty of Technology and Engineering, The M.S. University of Baroda, Vadodara 390001, Gujarat, India. rpt75@rediffmail.com
authors.forename: Rakesh
authors.initials: R
authors.lastname: Thakkar
authors.forename: Uma
authors.initials: U
authors.lastname: Chudasama
mesh_terms: D002412:Cations; D002627:Chemistry, Physical / Q000379:methods; D004573:Electrolytes; D006863:Hydrogen-Ion Concentration; D007477:Ions; D007700:Kinetics; D008670:Metals / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods; D013818:Thermogravimetry / Q000379:methods; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods; D014961:X-Ray Diffraction / Q000379:methods; D015040:Zirconium / Q000737:chemistry*
chemical_list: D002412:Cations; D004573:Electrolytes; D007477:Ions; D008670:Metals; D012997:Solvents; D014874:Water Pollutants, Chemical; C027006:zirconium phosphate; D015040:Zirconium