Abstract
Hydrothermal technique is an effective method for metal phosphates crystallization. These compounds exhibit various structures of three-dimensional open frameworks, two-dimensional layers, and one-dimensional chains. Since organic medium was introduced into metal phosphates synthesis systems, a lot of phosphates with novel layered or chain structures have been crystallized. With the aim to open up a new synthetic system for this class of compounds and obtain some new structures, in the present work, we studied the synthesis and characterizations of crystalline zirconium phosphates in a non-aqueous organic medium. Several zirconium phosphates crystals have been prepared from ZrOCl2 - H3PO4 - organic anime - NH4F - organic solvent systems. Through the systematical investigation of synthetic conditions, the effects of non-aqueous solvents, organic amines and F- cations on products crystallization are further clarified. Moreover, the probable reaction mechanisms were estimated, and the ion-exchange properties of the compounds have also been investigated.
