Structural parameters of aqueous solutions of potassium fluoride under hydrothermal conditions

The structural parameters of aqueous KF solutions with concentrations of 10 and 20 wt % in the temperature range 473–623 K (p 18.7–24.6 MPa), obtained by the method of integral equations, are presented and compared with the structural parameters under standard conditions. Regularities of the structure formation of the systems under hydrothermal conditions, connected with ionic hydration and association, are elucidated. It is established that within the studied temperature range the number of contact associates in the solutions is stabilized, implying the possibility of formation of crystallization centers.