Chromatography and zone electrophoresis of inorganic ions dissolved in fused salts : VI. The electrophoretic behaviour of some inorganic anions in alkali nitrate and perchlorate melts

Abstract

The electrophoretic mobilities of some inorganic anions dissolved in molten LiNO 3 at 300°, (Li-K)NO 3 eutectic at 160°, (Na-K)NO 3 mixture of 250° and (Li-K)ClO 4 eutectic at 300° are reported and discussed. In (Li-K)ClO 4 eutectic, all the anions examined, except ClO 4 −, move towards the cathode or stay at the point of application. This is probably due to a strong cation-anion interaction, according to the Blander 11 model of molten salts, occurring between the Li ions of the solvent and the dissolved anions. From the differences between the mobilities of the chloride and bromide ions in the solvents examined, an approximate scale for the associating power of the cations of these solvents could be established.