Study of an Inorganic Ion Exchanger Mg₂Ti_1.25(PO₄)₃

Abstract:

The ion-exchanger Mg₂Ti_1.25(PO₄)₃ of spinel type was prepared by means of the solid state reaction crystallization method. Its ion-exchange properties for alkali ions such as saturation capacity of exchange and distribution coefficient were determined. Mg₂Ti_1.25(PO₄)₃ was characterized by virtue of X-ray diffraction method. This inorganic ion-exchanger (Mg₂Ti_1.25(PO₄)₃) has the saturation capacity of exchange for Li⁺ higher than those for other alkali ions, the saturation capacity of exchange for Li⁺ reaches to 6.0mmol/g, MgTi-750(H) has a higher selectivity of ion exchange for Li⁺ than for other alkali ions. These result show MgTi-750 (H) has better memory and selectivity of ion exchange, and higher capacity of ion exchange for Li⁺. It is a kind of prospective ionic sieve for Li⁺.

• Periodical: Advanced Materials Research (Volume 442)
• Pages: 50-53
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.442.50
• Online since: January 2012
• Authors: Heng Li
• Keywords: Exchange Capacity, Ion Exchanger, Mg₂Ti_1.25(PO₄)₃

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