Synthesis and Properties of Novel Na+ Ion Exchanger

Abstract

A novel sodium specific kind of ion exchanger Li_1.4La_0.4Zr_1.6(PO₄)₃ was synthesized by solid state reaction method. The sample was characterized by X-ray diffraction(XRD), infrared spectrum(FTIR) and scanning electron microscope (SEM). The investigation of the ion exchange properties showed that its exchange capacity is very high, even reach 41.3 mg/g and it can be used to remove Na+ from lithium chloride. The Na/Li ion exchange reaction rate increased obviously for Li_1.4La_0.4Zr_1.6(PO₄)₃ with increasing temperature and the Na/Li ion exchange kinetics process in lithium chloride solution could be represented approximately by the equation of JMAK.