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Fosfato de zircônio altamente disperso foi preparado reagindo acetato de celulose/ZrO 2 (ZrO 2 = 11 wt%, 1,0 mmol g -1 de átomo de zircônio por grama de material) com ácido fosfórico. Highly dispersed zirconium phosphate was prepared by reacting celullose acetate/ZrO 2 (ZrO 2 = 11 wt%, 1.0 mmol g -1 of zirconium atom per gram of the material) with phosphoric acid. High power decoupling magic angle spinning (HPDEC-MAS) 31 P NMR and X-ray photoelectron spectroscopy data indicated that HPO 4 2-is the species present on the membrane surface. The specific concentration of acidic centers, determined by ammonia gas adsorption, is 0.60 mmol g The high values of the separation factors S Na + /Li + and S K + /Li + (up to several hundreds) support the application of this material for the quantitative separation of Na + and K + from Li + from a mixture containing these three ions.