The Effect On The Li⁺/Ag⁺Ion-exchange Of Li_1+xTi_2-xAl_x（PO₄）₃（x=0,0.1,0.3,0.5,0.7,0.9,1.1,1.3） Doped With Al

LiTi2(PO4)3is a fast ion conductors, Its crystal structure is three-dimensional framework which consisting of TiO6and PO4tetrahedron octahedron. Li+, Na+and Ag+move through the frame in two different series of the slit between the lattice nodes. Besides, LiTi2(PO4)3in water solution perform more selectivity to dope with Na+and Ag+. so it is great application material in the future. It can be used to recycle silver in the waste liquid. This paper researched The effect on the Li+/Ag+ion-exchange of Li1+xTi2-xAlx(PO4)3(x=0,0.1,0.3,0.5,0.7,0.9,1.1,1.3) doped with Al, Conclusion are as follows:The experiment and data indicate The ion exchange reaction Li1+xTi2-xAlx(PO4)3(x=0,0.1,0.3,0.5,0.7,0.9,1.1,1.3) towards Ag+are through the formation of the form of solid solution. Ag+are all replaced by Li+in LiTi2(PO4)3.The experiment result shows that, in Li1+xTi2-xAlx(PO4)3, the max ion exchange capacity is Li1.5Ti1.5Al0.5(PO4)3, approximately3.74; the max exchange fraction is LiTi2(PO4)3, Li1.1iT1.9Al0.1(PO4)3and Li1.3Ti1.7Al0.3(PO4)3, nearly100%.The experiment has shown the ion curves for Li1+xTi2-xAlx(PO4)3(x=0,0.1,0.3,0.5,0.7,0.9,1.1,1.3) to exchange Ag+, and the Kielland picture for Li1+xTi2-xAlx(PO4)3(x=0,0.1,0.3,0.5,0.7,0.9,1.1,1.3) to exchange Li+/Ag+. The result indicated that LiTi2(PO4)3, Li1.1Ti1.9Al0.1(PO4)3and Li1.3Ti1.7Al0.3(PO4)3have the high selectivity to Ag+, but the others about x>0.3are worse with addition of the Al3+. In different temperature, Li1.3Ti1.7Al0.3(PO4)3hold the minimum△Gm, it has the maximum exchange trend, Most favorable response to reaction spontaneously.