ISOTHERMAL TRANSPORT PROCESSES IN MOLTEN SALTS BINARY SYSTEMS

摘要

Transport numbers determinations in the molten systems (Cs-Ag)NO3 at T=240℃, (Na-Tl)NO, at T=320℃ and in C2NO3 rich region of (Na-Cs)NO3 system at T=440℃, were carried out by means of an ionophoretic technique.nThe inert support was provided by a thin layer of fritted porous ceramic oxides (AL2O3, MgO or ZrO2) fixed on strips of sintered ceramic oxides (AL2O3 or ZrO2) with zero open porosity.nIn both the systems (Cs-Ag)NO3 and (Na-Tl)NO3 the measured transport numbers vary in a non-linear way with composition, indicating that ionic mobilities are not constant.nFrom the transport parameters liquid junctions potentials were calculated. These values never exceed 8 mV (Cs-Ag)No3, and 3 mV (Na-Tl)NO3.