Obtaining and study of thermo stable sorbents on the basis of double phosphates and arsenates of tin, zirconium and hafnium

Present article is devoted to obtaining and study of thermo stable sorbents on the basis of double phosphates and arsenates of tin, zirconium and hafnium. Therefore a number of double salts are obtained by means of methods of high temperature solid phase interaction of twice-substituted phosphates and arsenates of tin, zirconium and hafnium with chlorides of alkaline and alkaline-earth elements. It is defined that the mechanism of interaction of acid phosphates and arsenates with chlorides depends on initial reagents and their molar ratio. The functional composition of obtained compounds is studied by means of X-ray radiography, thermography and infrared spectroscopy. A high thermal stability of synthesized double phosphates is determined.