Chloroaluminate Equilibria in AlCl[sub 3]-NaCl Melts

Abstract

Equilibrium constants were calculated for reactions governing the species present at 175°C in molten mixtures of aluminum chloride and sodium chloride. The equilibria postulated pertain to formation of the complex ions , , and from , , and . The constants were derived from potentials exhibited by concentration cells of the type , , , and from vapor pressures over pure and molten mixtures. Measurements were made throughout the concentration range . The possibilities of using these concentration cells as high energy density batteries are considered.